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2017-06-29of: Add check to of_scan_flat_dt() before accessing initial_boot_paramsTobias Wolf
commit 3ec754410cb3e931a6c4920b1a150f21a94a2bf4 upstream. An empty __dtb_start to __dtb_end section might result in initial_boot_params being null for arch/mips/ralink. This showed that the boot process hangs indefinitely in of_scan_flat_dt(). Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14605/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-25of: fdt: add missing allocation-failure checkJohan Hovold
commit 49e67dd17649b60b4d54966e18ec9c80198227f0 upstream. The memory allocator passed to __unflatten_device_tree() (e.g. a wrapped kzalloc) can fail so add the missing sanity check to avoid dereferencing a NULL pointer. Fixes: fe14042358fa ("of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-25of: fix "/cpus" reference leak in of_numa_parse_cpu_nodes()Tyrel Datwyler
commit b8475cbee5ab2eac05f9cd5dbcc94c453d3cbf10 upstream. The call to of_find_node_by_path("/cpus") returns the cpus device_node with its reference count incremented. There is no matching of_node_put() call in of_numa_parse_cpu_nodes() which results in a leaked reference to the "/cpus" node. This patch adds an of_node_put() to release the reference. fixes: 298535c00a2c ("of, numa: Add NUMA of binding implementation.") Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Acked-by: David Daney <david.daney@cavium.com> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-25of: fix sparse warning in of_pci_range_parser_oneRob Herring
commit eb3100365791b06242b8bb5c3c2854ba41dabfbc upstream. sparse gives the following warning for 'pci_space': ../drivers/of/address.c:266:26: warning: incorrect type in assignment (different base types) ../drivers/of/address.c:266:26: expected unsigned int [unsigned] [usertype] pci_space ../drivers/of/address.c:266:26: got restricted __be32 const [usertype] <noident> It appears that pci_space is only ever accessed on powerpc, so the endian swap is often not needed. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-09of, numa: Return NUMA_NO_NODE from disable of_node_to_nid() if nid not possible.David Daney
commit b6cc9474e2dd9f0c19b694b40961d81117f1e918 upstream. On arm64 NUMA kernels we can pass "numa=off" on the command line to disable NUMA. A side effect of this is that kmalloc_node() calls to non-zero nodes will crash the system with an OOPS: [ 0.000000] ITS@0x0000901000020000: allocated 2097152 Devices @10002000000 (flat, esz 8, psz 64K, shr 1) [ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00001680 [ 0.000000] pgd = fffffc0009470000 [ 0.000000] [00001680] *pgd=0000010ffff90003, *pud=0000010ffff90003, *pmd=0000010ffff90003, *pte=0000000000000000 [ 0.000000] Internal error: Oops: 96000006 [#1] SMP . . . [ 0.000000] [<fffffc00081c8950>] __alloc_pages_nodemask+0xa4/0xe68 [ 0.000000] [<fffffc000821fa70>] new_slab+0xd0/0x564 [ 0.000000] [<fffffc0008221e24>] ___slab_alloc+0x2e4/0x514 [ 0.000000] [<fffffc0008239498>] __slab_alloc+0x48/0x58 [ 0.000000] [<fffffc0008222c20>] __kmalloc_node+0xd0/0x2dc [ 0.000000] [<fffffc0008115374>] __irq_domain_add+0x7c/0x164 [ 0.000000] [<fffffc0008b461dc>] its_probe+0x784/0x81c [ 0.000000] [<fffffc0008b462bc>] its_init+0x48/0x1b0 [ 0.000000] [<fffffc0008b4543c>] gic_init_bases+0x228/0x360 [ 0.000000] [<fffffc0008b456bc>] gic_of_init+0x148/0x1cc [ 0.000000] [<fffffc0008b5aec8>] of_irq_init+0x184/0x298 [ 0.000000] [<fffffc0008b43f9c>] irqchip_init+0x14/0x38 [ 0.000000] [<fffffc0008b12d60>] init_IRQ+0xc/0x30 [ 0.000000] [<fffffc0008b10a3c>] start_kernel+0x240/0x3b8 [ 0.000000] [<fffffc0008b101c4>] __primary_switched+0x30/0x6c [ 0.000000] Code: 912ec2a0 b9403809 0a0902fb 37b007db (f9400300) . . . This is caused by code like this in kernel/irq/irqdomain.c domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size), GFP_KERNEL, of_node_to_nid(of_node)); When NUMA is disabled, the concept of a node is really undefined, so of_node_to_nid() should unconditionally return NUMA_NO_NODE. Fix by returning NUMA_NO_NODE when the nid is not in the set of possible nodes. Reported-by: Gilbert Netzer <noname@pdc.kth.se> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-30of_mdio: add helper to deregister fixed-link PHYsJohan Hovold
Add helper to deregister fixed-link PHYs registered using of_phy_register_fixed_link(). Convert the two drivers that care to deregister their fixed-link PHYs to use the new helper, but note that most drivers currently fail to do so. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-17of_mdio: fix device reference leak in of_phy_find_deviceJohan Hovold
Make sure to drop the reference taken by bus_find_device() before returning NULL from of_phy_find_device() when the found device is not a PHY. Fixes: 6ed742363b9c ("of: of_mdio: Ensure mdio device is a PHY") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-17of_mdio: fix node leak in of_phy_register_fixed_link error pathJohan Hovold
Make sure to drop the of_node reference also on failure to parse the speed property in of_phy_register_fixed_link(). Fixes: 3be2a49e5c08 ("of: provide a binding for fixed link PHYs") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-11Revert "console: don't prefer first registered if DT specifies stdout-path"Hans de Goede
This reverts commit 05fd007e4629 ("console: don't prefer first registered if DT specifies stdout-path"). The reverted commit changes existing behavior on which many ARM boards rely. Many ARM small-board-computers, like e.g. the Raspberry Pi have both a video output and a serial console. Depending on whether the user is using the device as a more regular computer; or as a headless device we need to have the console on either one or the other. Many users rely on the kernel behavior of the console being present on both outputs, before the reverted commit the console setup with no console= kernel arguments on an ARM board which sets stdout-path in dt would look like this: [root@localhost ~]# cat /proc/consoles ttyS0 -W- (EC p a) 4:64 tty0 -WU (E p ) 4:1 Where as after the reverted commit, it looks like this: [root@localhost ~]# cat /proc/consoles ttyS0 -W- (EC p a) 4:64 This commit reverts commit 05fd007e4629 ("console: don't prefer first registered if DT specifies stdout-path") restoring the original behavior. Fixes: 05fd007e4629 ("console: don't prefer first registered if DT specifies stdout-path") Link: http://lkml.kernel.org/r/20161104121135.4780-2-hdegoede@redhat.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Thorsten Leemhuis <regressions@leemhuis.info> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Tejun Heo <tj@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-15Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: "This is the main MIPS pull request for 4.9: MIPS core arch code: - traps: 64bit kernels should read CP0_EBase 64bit - traps: Convert ebase to KSEG0 - c-r4k: Drop bc_wback_inv() from icache flush - c-r4k: Split user/kernel flush_icache_range() - cacheflush: Use __flush_icache_user_range() - uprobes: Flush icache via kernel address - KVM: Use __local_flush_icache_user_range() - c-r4k: Fix flush_icache_range() for EVA - Fix -mabi=64 build of vdso.lds - VDSO: Drop duplicated -I*/-E* aflags - tracing: move insn_has_delay_slot to a shared header - tracing: disable uprobe/kprobe on compact branch instructions - ptrace: Fix regs_return_value for kernel context - Squash lines for simple wrapper functions - Move identification of VP(E) into proc.c from smp-mt.c - Add definitions of SYNC barrierstype values - traps: Ensure full EBase is written - tlb-r4k: If there are wired entries, don't use TLBINVF - Sanitise coherentio semantics - dma-default: Don't check hw_coherentio if device is non-coherent - Support per-device DMA coherence - Adjust MIPS64 CAC_BASE to reflect Config.K0 - Support generating Flattened Image Trees (.itb) - generic: Introduce generic DT-based board support - generic: Convert SEAD-3 to a generic board - Enable hardened usercopy - Don't specify STACKPROTECTOR in defconfigs Octeon: - Delete dead code and files across the platform. - Change to use all memory into use by default. - Rename upper case variables in setup code to lowercase. - Delete legacy hack for broken bootloaders. - Leave maintaining the link state to the actual ethernet/PHY drivers. - Add DTS for D-Link DSR-500N. - Fix PCI interrupt routing on D-Link DSR-500N. Pistachio: - Remove ANDROID_TIMED_OUTPUT from defconfig TX39xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework TX49xx: - Move GPIO setup from .mem_setup() to .arch_init() - Convert to Common Clock Framework txx9wdt: - Add missing clock (un)prepare calls for CCF BMIPS: - Add PW, GPIO SDHCI and NAND device node names - Support APPENDED_DTB - Add missing bcm97435svmb to DT_NONE - Rename bcm96358nb4ser to bcm6358-neufbox4-sercom - Add DT examples for BCM63268, BCM3368 and BCM6362 - Add support for BCM3368 and BCM6362 PCI - Reduce stack frame usage - Use struct list_head lists - Support for CONFIG_PCI_DOMAINS_GENERIC - Make pcibios_set_cache_line_size an initcall - Inline pcibios_assign_all_busses - Split pci.c into pci.c & pci-legacy.c - Introduce CONFIG_PCI_DRIVERS_LEGACY - Support generic drivers CPC - Convert bare 'unsigned' to 'unsigned int' - Avoid lock when MIPS CM >= 3 is present GIC: - Delete unused file smp-gic.c mt7620: - Delete unnecessary assignment for the field "owner" from PCI BCM63xx: - Let clk_disable() return immediately if clk is NULL pm-cps: - Change FSB workaround to CPU blacklist - Update comments on barrier instructions - Use MIPS standard lightweight ordering barrier - Use MIPS standard completion barrier - Remove selection of sync types - Add MIPSr6 CPU support - Support CM3 changes to Coherence Enable Register SMP: - Wrap call to mips_cpc_lock_other in mips_cm_lock_other - Introduce mechanism for freeing and allocating IPIs cpuidle: - cpuidle-cps: Enable use with MIPSr6 CPUs. SEAD3: - Rewrite to use DT and generic kernel feature. USB: - host: ehci-sead3: Remove SEAD-3 EHCI code FBDEV: - cobalt_lcdfb: Drop SEAD3 support dt-bindings: - Document a binding for simple ASCII LCDs auxdisplay: - img-ascii-lcd: driver for simple ASCII LCD displays irqchip i8259: - i8259: Add domain before mapping parent irq - i8259: Allow platforms to override poll function - i8259: Remove unused i8259A_irq_pending Malta: - Rewrite to use DT of/platform: - Probe "isa" busses by default CM: - Print CM error reports upon bus errors Module: - Migrate exception table users off module.h and onto extable.h - Make various drivers explicitly non-modular: - Audit and remove any unnecessary uses of module.h mailmap: - Canonicalize to Qais' current email address. Documentation: - MIPS supports HAVE_REGS_AND_STACK_ACCESS_API Loongson1C: - Add CPU support for Loongson1C - Add board support - Add defconfig - Add RTC support for Loongson1C board All this except one Documentation fix has sat in linux-next and has survived Imagination's automated build test system" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (127 commits) Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API MIPS: ptrace: Fix regs_return_value for kernel context MIPS: VDSO: Drop duplicated -I*/-E* aflags MIPS: Fix -mabi=64 build of vdso.lds MIPS: Enable hardened usercopy MIPS: generic: Convert SEAD-3 to a generic board MIPS: generic: Introduce generic DT-based board support MIPS: Support generating Flattened Image Trees (.itb) MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 MIPS: Print CM error reports upon bus errors MIPS: Support per-device DMA coherence MIPS: dma-default: Don't check hw_coherentio if device is non-coherent MIPS: Sanitise coherentio semantics MIPS: PCI: Support generic drivers MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY MIPS: PCI: Split pci.c into pci.c & pci-legacy.c MIPS: PCI: Inline pcibios_assign_all_busses MIPS: PCI: Make pcibios_set_cache_line_size an initcall MIPS: PCI: Support for CONFIG_PCI_DOMAINS_GENERIC MIPS: PCI: Use struct list_head lists ...
2016-10-11Merge tag 'iommu-updates-v4.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - support for interrupt virtualization in the AMD IOMMU driver. These patches were shared with the KVM tree and are already merged through that tree. - generic DT-binding support for the ARM-SMMU driver. With this the driver now makes use of the generic DMA-API code. This also required some changes outside of the IOMMU code, but these are acked by the respective maintainers. - more cleanups and fixes all over the place. * tag 'iommu-updates-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (40 commits) iommu/amd: No need to wait iommu completion if no dte irq entry change iommu/amd: Free domain id when free a domain of struct dma_ops_domain iommu/amd: Use standard bitmap operation to set bitmap iommu/amd: Clean up the cmpxchg64 invocation iommu/io-pgtable-arm: Check for v7s-incapable systems iommu/dma: Avoid PCI host bridge windows iommu/dma: Add support for mapping MSIs iommu/arm-smmu: Set domain geometry iommu/arm-smmu: Wire up generic configuration support Docs: dt: document ARM SMMU generic binding usage iommu/arm-smmu: Convert to iommu_fwspec iommu/arm-smmu: Intelligent SMR allocation iommu/arm-smmu: Add a stream map entry iterator iommu/arm-smmu: Streamline SMMU data lookups iommu/arm-smmu: Refactor mmu-masters handling iommu/arm-smmu: Keep track of S2CR state iommu/arm-smmu: Consolidate stream map entry state iommu/arm-smmu: Handle stream IDs more dynamically iommu/arm-smmu: Set PRIVCFG in stage 1 STEs iommu/arm-smmu: Support non-PCI devices with SMMUv3 ...
2016-10-11Merge tag 'for-linus-20161008' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD updates from Brian Norris: "I've not been very active this cycle, so these are mostly from Boris, for the NAND flash subsystem. NAND: - Add the infrastructure to automate NAND timings configuration - Provide a generic DT property to maximize ECC strength - Some refactoring in the core bad block table handling, to help with improving some of the logic in error cases. - Minor cleanups and fixes MTD: - Add APIs for handling page pairing; this is necessary for reliably supporting MLC and TLC NAND flash, where paired-page disturbance affects reliability. Upper layers (e.g., UBI) should make use of these in the near future" * tag 'for-linus-20161008' of git://git.infradead.org/linux-mtd: (35 commits) mtd: nand: fix trivial spelling error mtdpart: Propagate _get/put_device() mtd: nand: Provide nand_cleanup() function to free NAND related resources mtd: Kill the OF_MTD Kconfig option mtd: nand: mxc: Test CONFIG_OF instead of CONFIG_OF_MTD mtd: nand: Fix nand_command_lp() for 8bits opcodes mtd: nand: sunxi: Support ECC maximization mtd: nand: Support maximizing ECC when using software BCH mtd: nand: Add an option to maximize the ECC strength mtd: nand: mxc: Add timing setup for v2 controllers mtd: nand: mxc: implement onfi get/set features mtd: nand: sunxi: switch from manual to automated timing config mtd: nand: automate NAND timings selection mtd: nand: Expose data interface for ONFI mode 0 mtd: nand: Add function to convert ONFI mode to data_interface mtd: nand: convert ONFI mode into data interface mtd: nand: Introduce nand_data_interface mtd: nand: Create a NAND reset function mtd: nand: remove unnecessary 'extern' from function declarations MAINTAINERS: Add maintainer entry for Ingenic JZ4780 NAND driver ...
2016-10-08console: don't prefer first registered if DT specifies stdout-pathPaul Burton
If a device tree specifies a preferred device for kernel console output via the stdout-path or linux,stdout-path chosen node properties or the stdout alias then the kernel ought to honor it & output the kernel console to that device. As it stands, this isn't the case. Whilst we parse the stdout-path properties & set an of_stdout variable from of_alias_scan(), and use that from of_console_check() to determine whether to add a console device as a preferred console whilst registering it, we also prefer the first registered console if no other has been selected at the time of its registration. This means that if a console other than the one the device tree selects via stdout-path is registered first, we will switch to using it & when the stdout-path console is later registered the call to add_preferred_console() via of_console_check() is too late to do anything useful. In practice this seems to mean that we switch to the dummy console device fairly early & see no further console output: Console: colour dummy device 80x25 console [tty0] enabled bootconsole [ns16550a0] disabled Fix this by not automatically preferring the first registered console if one is specified by the device tree. This allows consoles to be registered but not enabled, and once the driver for the console selected by stdout-path calls of_console_check() the driver will be added to the list of preferred consoles before any other console has been enabled. When that console is then registered via register_console() it will be enabled as expected. Link: http://lkml.kernel.org/r/20160809151937.26118-1-paul.burton@imgtec.com Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Tejun Heo <tj@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Ivan Delalande <colona@arista.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jan Kara <jack@suse.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Joe Perches <joe@perches.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-06of/platform: Probe "isa" busses by defaultPaul Burton
Since commit 44a7185c2ae6 ("of/platform: Add common method to populate default bus") platforms calling of_platform_bus_probe from an initcall is either a rather unsafe race with of_platform_default_populate_init or a no-op. The MIPS Malta board needs to probe devices under an ISA bus, which we do support in the of_busses array but until now haven't included in of_default_bus_match_table. Add an "isa" entry to of_default_bus_match_table such that we can just accept use of of_platform_default_populate_init & remove the Malta-specific match table in a later patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Rob Herring <robh@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14275/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05Merge tag 'devicetree-for-4.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - update changeset documentation on locking to reflect current code - fix alphabetizing of vendor-prefixes.txt - add various vendor prefixes - add ESP8089 WiFi binding - add new variable sized array parsing functions * tag 'devicetree-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (21 commits) DT: irqchip: renesas-irqc: document R8A7743/5 support dt-bindings: Add Keith&Koep vendor prefix dt-bindings: add vendor prefix for Auvidea GmbH of: Add vendor prefix for Engicam s.r.l company devicetree: Add vendor-prefix for Silead Inc. devicetree: bindings: Add vendor prefix for Topeet. dt-bindings: Add summit vendor id of/platform: Initialise dev->fwnode appropriately of: Add array read functions with min/max size limits of: Make of_find_property_value_of_size take a length range dt: net: enhance DWC EQoS binding to support Tegra186 bindings: PCI: artpec: correct pci binding example Documentation: devicetree: Fix max77693 spelling errors dt: bindings: Add binding for ESP8089 wifi chips PCI: Xilinx NWL PCIe: Updating device tree documentation with prefetchable memory space Documentation: devicetree: spi: fix wrong spi-bus documentation dt-bindings: Add Japan Display Inc vendor id dt-bindings: vendor-prefixes: Add Sierra Wireless devicetree: Add vendor prefix for Shenzhen Sunchip Technology Co., Ltd devicetree: Sort vendor prefixes in alphabetical order ...
2016-10-04Merge tag 'tty-4.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty and serial updates from Greg KH: "Here is the big tty and serial patch set for 4.9-rc1. It also includes some drivers/dma/ changes, as those were needed by some serial drivers, and they were all acked by the DMA maintainer. Also in here is the long-suffering ACPI SPCR patchset, which was passed around from maintainer to maintainer like a hot-potato. Seems I was the sucker^Wlucky one. All of those patches have been acked by the various subsystem maintainers as well. All of this has been in linux-next with no reported issues" * tag 'tty-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (111 commits) Revert "serial: pl011: add console matching function" MAINTAINERS: update entry for atmel_serial driver serial: pl011: add console matching function ARM64: ACPI: enable ACPI_SPCR_TABLE ACPI: parse SPCR and enable matching console of/serial: move earlycon early_param handling to serial Revert "drivers/tty: Explicitly pass current to show_stack" tty: amba-pl011: Don't complain on -EPROBE_DEFER when no irq nios2: dts: 10m50: Add tx-threshold parameter serial: 8250: Set Altera 16550 TX FIFO Threshold serial: 8250: of: Load TX FIFO Threshold from DT Documentation: dt: serial: Add TX FIFO threshold parameter drivers/tty: Explicitly pass current to show_stack serial: imx: Fix DCD reading serial: stm32: mark symbols static where possible serial: xuartps: Add some register initialisation to cdns_early_console_setup() serial: xuartps: Removed unwanted checks while reading the error conditions serial: xuartps: Rewrite the interrupt handling logic serial: stm32: use mapbase instead of membase for DMA tty/serial: atmel: fix fractional baud rate computation ...
2016-09-28of/serial: move earlycon early_param handling to serialLeif Lindholm
We have multiple "earlycon" early_param handlers - merge the DT one into the main earlycon one. It's a cleanup that also will be useful to defer setting up DT console until ACPI/DT decision is made. Rename the exported function to avoid clashing with the function from arch/microblaze/kernel/prom.c Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com> Tested-by: Christopher Covington <cov@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-23mtd: Kill the OF_MTD Kconfig optionBoris Brezillon
Commit d48f62b9a0a0 ("mtd: nand: move of_get_nand_xxx() helpers into nand_base.c") removed the drivers/of/of_mtd.c file but did not remove the associated OF_MTD Kconfig option. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-09-16of/irq: Break out msi-map lookup (again)Robin Murphy
The PCI msi-map code is already doing double-duty translating IDs and retrieving MSI parents, which unsurprisingly is the same functionality we need for the identically-formatted PCI iommu-map property. Drag the core parsing routine up yet another layer into the general OF-PCI code, and further generalise it for either kind of lookup in either flavour of map property. Acked-by: Rob Herring <robh+dt@kernel.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-15of/platform: Initialise dev->fwnode appropriatelyRobin Murphy
Whilst we're some of the way towards a universal firmware property interface, drivers which deal with both OF and ACPI probing end up having to do things like this: dev->of_node ? &dev->of_node->fwnode : dev->fwnode This seems unnecessary, when the OF code could instead simply fill in the device's fwnode when binding the of_node, and let the drivers use dev->fwnode either way. Let's give it a go and see what falls out. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-09-15of: Add array read functions with min/max size limitsRichard Fitzgerald
Add a new set of array reading functions that take a minimum and maximum size limit and will fail if the property size is not within the size limits. This makes it more convenient for drivers that use variable-size DT arrays which must be bounded at both ends - data must be at least N entries but must not overflow the array it is being copied into. It is also more efficient than making this functionality out of existing public functions and avoids duplication. The existing array functions have been left in the API, since there are a very large number of clients of those functions and their existing functionality is still useful. This avoids turning a small API improvement into a major kernel rework. The old functions have been turned into mininmal static inlines calling the new functions. The old functions had no upper limit on the actual size of the dts entry, to preserve this functionality rather than keeping two near-identical implementations, if the new function is called with max=0 there is no limit on the size of the dts entry but only the min number of elements are read. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-09-15of: Make of_find_property_value_of_size take a length rangeRichard Fitzgerald
In preparation for adding variable-length array reads, change of_find_property_value_of_size so that it takes an optional maximum length. If the maximum is passed as 0, the behaviour is unchanged and it will return a property if it's >= the requested minimum length. If maximum is non-zero it will only return a property whose length is min <= l <= max. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-09-09of_numa: Use pr_fmt()Kefeng Wang
Use pr_fmt to prefix kernel output. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09of_numa: Use of_get_next_parent to simplify codeKefeng Wang
Use of_get_next_parent() instead of open-code. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09of/numa: remove a duplicated warningZhen Lei
This warning has been printed in of_numa_parse_cpu_nodes before. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09of/numa: add nid check for memory blockZhen Lei
If the numa-id which was configured in memory@ devicetree node is greater than MAX_NUMNODES, we should report a warning. We have done this for cpus and distance-map dt nodes, this patch help them to be consistent. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09of/numa: fix a memory@ node can only contains one memory blockZhen Lei
For a normal memory@ devicetree node, its reg property can contains more memory blocks. Because we don't known how many memory blocks maybe contained, so we try from index=0, increase 1 until error returned(the end). Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09of/numa: remove a duplicated pr_debug informationZhen Lei
This information will be printed in the subfunction numa_add_memblk. They are not the same, but very similar. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-08-15of: fix reference counting in of_graph_get_endpoint_by_regsLucas Stach
The called of_graph_get_next_endpoint() already decrements the refcount of the prev node, so it is wrong to do it again in the calling function. Use the for_each_endpoint_of_node() helper to interate through the endpoint OF nodes, which already does the right thing and simplifies the code a bit. Fixes: 8ccd0d0ca041 (of: add helper for getting endpoint node of specific identifiers) Cc: stable@vger.kernel.org Reported-by: David Jander <david@protonic.nl> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Rob Herring <robh@kernel.org>
2016-08-12of/platform: disable the of_platform_default_populate_init() for all the ppc ↵Kevin Hao
boards With the commit 44a7185c2ae6 ("of/platform: Add common method to populate default bus"), a default function is introduced to populate the default bus and this function is invoked at the arch_initcall_sync level. But a lot of ppc boards use machine_device_initcall() to populate the default bus. This means that the default populate function has higher priority and would override the arch specific population of the bus. The side effect is that some arch specific bus are not probed, then cause various malfunction due to the miss of some devices. Since it is very possible to introduce bugs if we simply change the initcall level for all these boards(about 30+). This just disable this default function for all the ppc boards. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-08-09of/irq: Mark interrupt controllers as populated before initialisationPhilipp Zabel
That way the init callback may clear the flag again, in case of drivers split between early irq chip and a normal platform driver. Fixes: 15cc2ed6dcf9 ("of/irq: Mark initialised interrupt controllers as populated") Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-08-09drivers/of: Validate device node in __unflatten_device_tree()Gavin Shan
@mynodes is set to NULL when __unflatten_device_tree() is called to unflatten device sub-tree in PCI hot add scenario on PowerPC PowerNV platform. Marking @mynodes detached unconditionally causes kernel crash as below backtrace shows: Unable to handle kernel paging request for data at address 0x00000000 Faulting instruction address: 0xc000000000b26f64 cpu 0x0: Vector: 300 (Data Access) at [c000003fcc7cf740] pc: c000000000b26f64: __unflatten_device_tree+0xf4/0x190 lr: c000000000b26f40: __unflatten_device_tree+0xd0/0x190 sp: c000003fcc7cf9c0 msr: 900000000280b033 dar: 0 dsisr: 40000000 current = 0xc000003fcc281680 paca = 0xc00000000ff00000 softe: 0 irq_happened: 0x01 pid = 2724, comm = sh Linux version 4.7.0-gavin-07754-g92a6836 (gwshan@gwshan) (gcc version \ 4.9.3 (Buildroot 2016.02-rc2-00093-g5ea3bce) ) #539 SMP Mon Aug 1 \ 12:40:29 AEST 2016 enter ? for help [c000003fcc7cfa50] c000000000b27060 of_fdt_unflatten_tree+0x60/0x90 [c000003fcc7cfaa0] c0000000004c6288 pnv_php_set_slot_power_state+0x118/0x440 [c000003fcc7cfb80] c0000000004c6a10 pnv_php_enable+0xc0/0x170 [c000003fcc7cfbd0] c0000000004c4d80 power_write_file+0xa0/0x190 [c000003fcc7cfc50] c0000000004be93c pci_slot_attr_store+0x3c/0x60 [c000003fcc7cfc70] c0000000002d3fd4 sysfs_kf_write+0x94/0xc0 [c000003fcc7cfcb0] c0000000002d2c30 kernfs_fop_write+0x180/0x260 [c000003fcc7cfd00] c000000000230fe0 __vfs_write+0x40/0x190 [c000003fcc7cfd90] c000000000232278 vfs_write+0xc8/0x240 [c000003fcc7cfde0] c000000000233d90 SyS_write+0x60/0x110 [c000003fcc7cfe30] c000000000009524 system_call+0x38/0x108 This avoids the kernel crash by marking @mynodes detached only when @mynodes is dereferencing valid device node in __unflatten_device_tree(). Fixes: 1d1bde550ea3 ("of: fdt: mark unflattened tree as detached") Reported-by: Meng Li <shlimeng@cn.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-08-09of: Delete an unnecessary check before the function call "of_node_put"Markus Elfring
The of_node_put() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Rob Herring <robh@kernel.org>
2016-08-05ramoops: use DT reserved-memory bindingsKees Cook
Instead of a ramoops-specific node, use a child node of /reserved-memory. This requires that of_platform_device_create() be explicitly called for the node, though, since "/reserved-memory" does not have its own "compatible" property. Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Rob Herring <robh@kernel.org>
2016-07-31Merge tag 'powerpc-4.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Highlights: - PowerNV PCI hotplug support. - Lots more Power9 support. - eBPF JIT support on ppc64le. - Lots of cxl updates. - Boot code consolidation. Bug fixes: - Fix spin_unlock_wait() from Boqun Feng - Fix stack pointer corruption in __tm_recheckpoint() from Michael Neuling - Fix multiple bugs in memory_hotplug_max() from Bharata B Rao - mm: Ensure "special" zones are empty from Oliver O'Halloran - ftrace: Separate the heuristics for checking call sites from Michael Ellerman - modules: Never restore r2 for a mprofile-kernel style mcount() call from Michael Ellerman - Fix endianness when reading TCEs from Alexey Kardashevskiy - start rtasd before PCI probing from Greg Kurz - PCI: rpaphp: Fix slot registration for multiple slots under a PHB from Tyrel Datwyler - powerpc/mm: Add memory barrier in __hugepte_alloc() from Sukadev Bhattiprolu Cleanups & fixes: - Drop support for MPIC in pseries from Rashmica Gupta - Define and use PPC64_ELF_ABI_v2/v1 from Michael Ellerman - Remove unused symbols in asm-offsets.c from Rashmica Gupta - Fix SRIOV not building without EEH enabled from Russell Currey - Remove kretprobe_trampoline_holder from Thiago Jung Bauermann - Reduce log level of PCI I/O space warning from Benjamin Herrenschmidt - Add array bounds checking to crash_shutdown_handlers from Suraj Jitindar Singh - Avoid -maltivec when using clang integrated assembler from Anton Blanchard - Fix array overrun in ppc_rtas() syscall from Andrew Donnellan - Fix error return value in cmm_mem_going_offline() from Rasmus Villemoes - export cpu_to_core_id() from Mauricio Faria de Oliveira - Remove old symbols from defconfigs from Andrew Donnellan - Update obsolete comments in setup_32.c about entry conditions from Benjamin Herrenschmidt - Add comment explaining the purpose of setup_kdump_trampoline() from Benjamin Herrenschmidt - Merge the RELOCATABLE config entries for ppc32 and ppc64 from Kevin Hao - Remove RELOCATABLE_PPC32 from Kevin Hao - Fix .long's in tlb-radix.c to more meaningful from Balbir Singh Minor cleanups & fixes: - Andrew Donnellan, Anna-Maria Gleixner, Anton Blanchard, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Colin Ian King, Geliang Tang, Greg Kurz, Madhavan Srinivasan, Michael Ellerman, Michael Ellerman, Stephen Rothwell, Stewart Smith. Freescale updates from Scott: - "Highlights include more 8xx optimizations, device tree updates, and MVME7100 support." PowerNV PCI hotplug from Gavin Shan: - PCI: Add pcibios_setup_bridge() - Override pcibios_setup_bridge() - Remove PCI_RESET_DELAY_US - Move pnv_pci_ioda_setup_opal_tce_kill() around - Increase PE# capacity - Allocate PE# in reverse order - Create PEs in pcibios_setup_bridge() - Setup PE for root bus - Extend PCI bridge resources - Make pnv_ioda_deconfigure_pe() visible - Dynamically release PE - Update bridge windows on PCI plug - Delay populating pdn - Support PCI slot ID - Use PCI slot reset infrastructure - Introduce pnv_pci_get_slot_id() - Functions to get/set PCI slot state - PCI/hotplug: PowerPC PowerNV PCI hotplug driver - Print correct PHB type names Power9 idle support from Shreyas B. Prabhu: - set power_save func after the idle states are initialized - Use PNV_THREAD_WINKLE macro while requesting for winkle - make hypervisor state restore a function - Rename idle_power7.S to idle_book3s.S - Rename reusable idle functions to hardware agnostic names - Make pnv_powersave_common more generic - abstraction for saving SPRs before entering deep idle states - Add platform support for stop instruction - cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES - cpuidle/powernv: cleanup cpuidle-powernv.c - cpuidle/powernv: Add support for POWER ISA v3 idle states - Use deepest stop state when cpu is offlined Power9 PMU from Madhavan Srinivasan: - factor out power8 pmu macros and defines - factor out power8 pmu functions - factor out power8 __init_pmu code - Add power9 event list macros for generic and cache events - Power9 PMU support - Export Power9 generic and cache events to sysfs Power9 preliminary interrupt & PCI support from Benjamin Herrenschmidt: - Add XICS emulation APIs - Move a few exception common handlers to make room - Add support for HV virtualization interrupts - Add mechanism to force a replay of interrupts - Add ICP OPAL backend - Discover IODA3 PHBs - pci: Remove obsolete SW invalidate - opal: Add real mode call wrappers - Rename TCE invalidation calls - Remove SWINV constants and obsolete TCE code - Rework accessing the TCE invalidate register - Fallback to OPAL for TCE invalidations - Use the device-tree to get available range of M64's - Check status of a PHB before using it - pci: Don't try to allocate resources that will be reassigned Other Power9: - Send SIGBUS on unaligned copy and paste from Chris Smart - Large Decrementer support from Oliver O'Halloran - Load Monitor Register Support from Jack Miller Performance improvements from Anton Blanchard: - Avoid load hit store in __giveup_fpu() and __giveup_altivec() - Avoid load hit store in setup_sigcontext() - Remove assembly versions of strcpy, strcat, strlen and strcmp - Align hot loops of some string functions eBPF JIT from Naveen N. Rao: - Fix/enhance 32-bit Load Immediate implementation - Optimize 64-bit Immediate loads - Introduce rotate immediate instructions - A few cleanups - Isolate classic BPF JIT specifics into a separate header - Implement JIT compiler for extended BPF Operator Panel driver from Suraj Jitindar Singh: - devicetree/bindings: Add binding for operator panel on FSP machines - Add inline function to get rc from an ASYNC_COMP opal_msg - Add driver for operator panel on FSP machines Sparse fixes from Daniel Axtens: - make some things static - Introduce asm-prototypes.h - Include headers containing prototypes - Use #ifdef __BIG_ENDIAN__ #else for REG_BYTE - kvm: Clarify __user annotations - Pass endianness to sparse - Make ppc_md.{halt, restart} __noreturn MM fixes & cleanups from Aneesh Kumar K.V: - radix: Update LPCR HR bit as per ISA - use _raw variant of page table accessors - Compile out radix related functions if RADIX_MMU is disabled - Clear top 16 bits of va only on older cpus - Print formation regarding the the MMU mode - hash: Update SDR1 size encoding as documented in ISA 3.0 - radix: Update PID switch sequence - radix: Update machine call back to support new HCALL. - radix: Add LPID based tlb flush helpers - radix: Add a kernel command line to disable radix - Cleanup LPCR defines Boot code consolidation from Benjamin Herrenschmidt: - Move epapr_paravirt_early_init() to early_init_devtree() - cell: Don't use flat device-tree after boot - ge_imp3a: Don't use the flat device-tree after boot - mpc85xx_ds: Don't use the flat device-tree after boot - mpc85xx_rdb: Don't use the flat device-tree after boot - Don't test for machine type in rtas_initialize() - Don't test for machine type in smp_setup_cpu_maps() - dt: Add of_device_compatible_match() - Factor do_feature_fixup calls - Move 64-bit feature fixup earlier - Move 64-bit memory reserves to setup_arch() - Use a cachable DART - Move FW feature probing out of pseries probe() - Put exception configuration in a common place - Remove early allocation of the SMU command buffer - Move MMU backend selection out of platform code - pasemi: Remove IOBMAP allocation from platform probe() - mm/hash: Don't use machine_is() early during boot - Don't test for machine type to detect HEA special case - pmac: Remove spurrious machine type test - Move hash table ops to a separate structure - Ensure that ppc_md is empty before probing for machine type - Move 64-bit probe_machine() to later in the boot process - Move 32-bit probe() machine to later in the boot process - Get rid of ppc_md.init_early() - Move the boot time info banner to a separate function - Move setting of {i,d}cache_bsize to initialize_cache_info() - Move the content of setup_system() to setup_arch() - Move cache info inits to a separate function - Re-order the call to smp_setup_cpu_maps() - Re-order setup_panic() - Make a few boot functions __init - Merge 32-bit and 64-bit setup_arch() Other new features: - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles from Sam Mendoza-Jonas - tty/hvc: Use opal irqchip interface if available from Sam Mendoza-Jonas - powerpc: Add module autoloading based on CPU features from Alastair D'Silva - crypto: vmx - Convert to CPU feature based module autoloading from Alastair D'Silva - Wake up kopald polling thread before waiting for events from Benjamin Herrenschmidt - xmon: Dump ISA 2.06 SPRs from Michael Ellerman - xmon: Dump ISA 2.07 SPRs from Michael Ellerman - Add a parameter to disable 1TB segs from Oliver O'Halloran - powerpc/boot: Add OPAL console to epapr wrappers from Oliver O'Halloran - Assign fixed PHB number based on device-tree properties from Guilherme G. Piccoli - pseries: Add pseries hotplug workqueue from John Allen - pseries: Add support for hotplug interrupt source from John Allen - pseries: Use kernel hotplug queue for PowerVM hotplug events from John Allen - pseries: Move property cloning into its own routine from Nathan Fontenot - pseries: Dynamic add entires to associativity lookup array from Nathan Fontenot - pseries: Auto-online hotplugged memory from Nathan Fontenot - pseries: Remove call to memblock_add() from Nathan Fontenot cxl: - Add set and get private data to context struct from Michael Neuling - make base more explicitly non-modular from Paul Gortmaker - Use for_each_compatible_node() macro from Wei Yongjun - Frederic Barrat - Abstract the differences between the PSL and XSL - Make vPHB device node match adapter's - Philippe Bergheaud - Add mechanism for delivering AFU driver specific events - Ignore CAPI adapters misplaced in switched slots - Refine slice error debug messages - Andrew Donnellan - static-ify variables to fix sparse warnings - PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl - PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state - Add cxl_check_and_switch_mode() API to switch bi-modal cards - remove dead Kconfig options - fix potential NULL dereference in free_adapter() - Ian Munsie - Update process element after allocating interrupts - Add support for CAPP DMA mode - Fix allowing bogus AFU descriptors with 0 maximum processes - Fix allocating a minimum of 2 pages for the SPA - Fix bug where AFU disable operation had no effect - Workaround XSL bug that does not clear the RA bit after a reset - Fix NULL pointer dereference on kernel contexts with no AFU interrupts - powerpc/powernv: Split cxl code out into a separate file - Add cxl_slot_is_supported API - Enable bus mastering for devices using CAPP DMA mode - Move cxl_afu_get / cxl_afu_put to base - Allow a default context to be associated with an external pci_dev - Do not create vPHB if there are no AFU configuration records - powerpc/powernv: Add support for the cxl kernel api on the real phb - Add support for using the kernel API with a real PHB - Add kernel APIs to get & set the max irqs per context - Add preliminary workaround for CX4 interrupt limitation - Add support for interrupts on the Mellanox CX4 - Workaround PE=0 hardware limitation in Mellanox CX4 - powerpc/powernv: Fix pci-cxl.c build when CONFIG_MODULES=n selftests: - Test unaligned copy and paste from Chris Smart - Load Monitor Register Tests from Jack Miller - Cyril Bur - exec() with suspended transaction - Use signed long to read perf_event_paranoid - Fix usage message in context_switch - Fix generation of vector instructions/types in context_switch - Michael Ellerman - Use "Delta" rather than "Error" in normal output - Import Anton's mmap & futex micro benchmarks - Add a test for PROT_SAO" * tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (263 commits) powerpc/mm: Parenthesise IS_ENABLED() in if condition tty/hvc: Use opal irqchip interface if available tty/hvc: Use IRQF_SHARED for OPAL hvc consoles selftests/powerpc: exec() with suspended transaction powerpc: Improve comment explaining why we modify VRSAVE powerpc/mm: Drop unused externs for hpte_init_beat[_v3]() powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header powerpc/mm: Fix build break when PPC_NATIVE=n crypto: vmx - Convert to CPU feature based module autoloading powerpc: Add module autoloading based on CPU features powerpc/powernv/ioda: Fix endianness when reading TCEs powerpc/mm: Add memory barrier in __hugepte_alloc() powerpc/modules: Never restore r2 for a mprofile-kernel style mcount() call powerpc/ftrace: Separate the heuristics for checking call sites powerpc: Merge 32-bit and 64-bit setup_arch() powerpc/64: Make a few boot functions __init powerpc: Re-order setup_panic() powerpc: Re-order the call to smp_setup_cpu_maps() powerpc/32: Move cache info inits to a separate function powerpc/64: Move the content of setup_system() to setup_arch() ...
2016-07-30Merge tag 'devicetree-for-4.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - remove most of_platform_populate() calls in arch code. Now the DT core code calls it in the default case and platforms only need to call it if they have special needs - use pr_fmt on all the DT core print statements - CoreSight binding doc improvements to block name descriptions - add dt_to_config script which can parse dts files and list corresponding kernel config options - fix memory leak hit with a PowerMac DT - correct a bunch of STMicro compatible strings to use the correct vendor prefix - fix DA9052 PMIC binding doc to match what is actually used in dts files * tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits) documentation: da9052: Update regulator bindings names to match DA9052/53 DTS expectations xtensa: Partially Revert "xtensa: Remove unnecessary of_platform_populate with default match table" xtensa: Fix build error due to missing include file MIPS: ath79: Add missing include file Fix spelling errors in Documentation/devicetree ARM: dts: fix STMicroelectronics compatible strings powerpc/dts: fix STMicroelectronics compatible strings Documentation: dt: i2c: use correct STMicroelectronics vendor prefix scripts/dtc: dt_to_config - kernel config options for a devicetree of: fdt: mark unflattened tree as detached of: overlay: add resolver error prints coresight: document binding acronyms Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties of: use pr_fmt prefix for all console printing of/irq: Mark initialised interrupt controllers as populated of: fix memory leak related to safe_name() Revert "of/platform: export of_default_bus_match_table" of: unittest: use of_platform_default_populate() to populate default bus memory: omap-gpmc: use of_platform_default_populate() to populate default bus bus: uniphier-system-bus: use of_platform_default_populate() to populate default bus ...
2016-07-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) Unified UDP encapsulation offload methods for drivers, from Alexander Duyck. 2) Make DSA binding more sane, from Andrew Lunn. 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli. 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar. 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX packets as soon as the device sees them, with the option to mirror the packet on TX via the same interface. From Brenden Blanco and others. 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet. 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli. 8) Simplify netlink conntrack entry layout, from Florian Westphal. 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido Schimmel, Yotam Gigi, and Jiri Pirko. 10) Add SKB array infrastructure and convert tun and macvtap over to it. From Michael S Tsirkin and Jason Wang. 11) Support qdisc packet injection in pktgen, from John Fastabend. 12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy. 13) Add NV congestion control support to TCP, from Lawrence Brakmo. 14) Add GSO support to SCTP, from Marcelo Ricardo Leitner. 15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni. 16) Support MPLS over IPV4, from Simon Horman. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits) xgene: Fix build warning with ACPI disabled. be2net: perform temperature query in adapter regardless of its interface state l2tp: Correctly return -EBADF from pppol2tp_getname. net/mlx5_core/health: Remove deprecated create_singlethread_workqueue net: ipmr/ip6mr: update lastuse on entry change macsec: ensure rx_sa is set when validation is disabled tipc: dump monitor attributes tipc: add a function to get the bearer name tipc: get monitor threshold for the cluster tipc: make cluster size threshold for monitoring configurable tipc: introduce constants for tipc address validation net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update() MAINTAINERS: xgene: Add driver and documentation path Documentation: dtb: xgene: Add MDIO node dtb: xgene: Add MDIO node drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset drivers: net: xgene: Use exported functions drivers: net: xgene: Enable MDIO driver drivers: net: xgene: Add backward compatibility drivers: net: phy: xgene: Add MDIO driver ...
2016-07-27Merge tag 'for-linus-4.8-rc0-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: "Features and fixes for 4.8-rc0: - ACPI support for guests on ARM platforms. - Generic steal time support for arm and x86. - Support cases where kernel cpu is not Xen VCPU number (e.g., if in-guest kexec is used). - Use the system workqueue instead of a custom workqueue in various places" * tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (47 commits) xen: add static initialization of steal_clock op to xen_time_ops xen/pvhvm: run xen_vcpu_setup() for the boot CPU xen/evtchn: use xen_vcpu_id mapping xen/events: fifo: use xen_vcpu_id mapping xen/events: use xen_vcpu_id mapping in events_base x86/xen: use xen_vcpu_id mapping when pointing vcpu_info to shared_info x86/xen: use xen_vcpu_id mapping for HYPERVISOR_vcpu_op xen: introduce xen_vcpu_id mapping x86/acpi: store ACPI ids from MADT for future usage x86/xen: update cpuid.h from Xen-4.7 xen/evtchn: add IOCTL_EVTCHN_RESTRICT xen-blkback: really don't leak mode property xen-blkback: constify instance of "struct attribute_group" xen-blkfront: prefer xenbus_scanf() over xenbus_gather() xen-blkback: prefer xenbus_scanf() over xenbus_gather() xen: support runqueue steal time on xen arm/xen: add support for vm_assist hypercall xen: update xen headers xen-pciback: drop superfluous variables xen-pciback: short-circuit read path used for merging write values ...
2016-07-27Merge tag 'media/v4.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - new framework support for HDMI CEC and remote control support - new encoding codec driver for Mediatek SoC - new frontend driver: helene tuner - added support for NetUp almost universal devices, with supports DVB-C/S/S2/T/T2 and ISDB-T - the mn88472 frontend driver got promoted from staging - a new driver for RCar video input - some soc_camera legacy drivers got removed: timb, omap1, mx2, mx3 - lots of driver cleanups, improvements and fixups * tag 'media/v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (377 commits) [media] cec: always check all_device_types and features [media] cec: poll should check if there is room in the tx queue [media] vivid: support monitor all mode [media] cec: fix test for unconfigured adapter in main message loop [media] cec: limit the size of the transmit queue [media] cec: zero unused msg part after msg->len [media] cec: don't set fh to NULL in CEC_TRANSMIT [media] cec: clear all status fields before transmit and always fill in sequence [media] cec: CEC_RECEIVE overwrote the timeout field [media] cxd2841er: Reading SNR for DVB-C added [media] cxd2841er: Reading BER and UCB for DVB-C added [media] cxd2841er: fix switch-case for DVB-C [media] cxd2841er: fix signal strength scale for ISDB-T [media] cxd2841er: adjust the dB scale for DVB-C [media] cxd2841er: provide signal strength for DVB-C [media] cxd2841er: fix BER report via DVBv5 stats API [media] mb86a20s: apply mask to val after checking for read failure [media] airspy: fix error logic during device register [media] s5p-cec/TODO: add TODO item [media] cec/TODO: drop comment about sphinx documentation ...
2016-07-25Merge branch 'acpi-numa'Rafael J. Wysocki
* acpi-numa: ACPI / NUMA: Enable ACPI based NUMA on ARM64 arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT ACPI / processor: Add acpi_map_madt_entry() ACPI / NUMA: Improve SRAT error detection and add messages ACPI / NUMA: Move acpi_numa_memory_affinity_init() to drivers/acpi/numa.c ACPI / NUMA: remove unneeded acpi_numa=1 ACPI / NUMA: move bad_srat() and srat_disabled() to drivers/acpi/numa.c x86 / ACPI / NUMA: cleanup acpi_numa_processor_affinity_init() arm64, NUMA: Cleanup NUMA disabled messages arm64, NUMA: rework numa_add_memblk() ACPI / NUMA: move acpi_numa_slit_init() to drivers/acpi/numa.c ACPI / NUMA: Move acpi_numa_arch_fixup() to ia64 only ACPI / NUMA: remove duplicate NULL check ACPI / NUMA: Replace ACPI_DEBUG_PRINT() with pr_debug() ACPI / NUMA: Use pr_fmt() instead of printk
2016-07-20dt: Add of_device_compatible_match()Benjamin Herrenschmidt
This provides an equivalent of of_fdt_match() for non-flat trees. This is more practical than matching an array of of_device_id structs when converting a bunch of existing users of of_fdt_match(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-18of: fdt: mark unflattened tree as detachedMichal Suchanek
The tree returned from of_fdt_unflatten_tree cannot be attached to the live tree because it is not marked as detached so mark it as such. The dt resolver checks the flag and refuses to process the tree otherwise. Signed-off-by: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-07-18of: overlay: add resolver error printsMichal Suchanek
Applying overlay fails silently in case of an error. Add error prints. Most notably the lack of symbols in the live tree is not reported. Signed-off-by: Michal Suchanek <hramrach@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-07-18of: use pr_fmt prefix for all console printingRob Herring
Clean-up all the DT printk functions to use common pr_fmt prefix. Some print statements such as kmalloc errors were redundant, so just drop those. Cc: Frank Rowand <frowand.list@gmail.com> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-07-17of_mdio: Abstract a general interface for phy connectDongpo Li
Abstract a general interface "of_phy_get_and_connect" for PHY connect. User will have no bother with getting "phy-mode" and "phy-handle" any more. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dongpo Li <lidongpo@hisilicon.com> Reviewed-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-08Merge tag 'v4.7-rc6' into patchworkMauro Carvalho Chehab
Linux 4.7-rc6 * tag 'v4.7-rc6': (1245 commits) Linux 4.7-rc6 ovl: warn instead of error if d_type is not supported MIPS: Fix possible corruption of cache mode by mprotect. locks: use file_inode() usb: dwc3: st: Use explicit reset_control_get_exclusive() API phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API phy: miphy28lp: Inform the reset framework that our reset line may be shared namespace: update event counter when umounting a deleted dentry 9p: use file_dentry() lockd: unregister notifier blocks if the service fails to come up completely ACPI,PCI,IRQ: correct operator precedence fuse: serialize dirops by default drm/i915: Fix missing unlock on error in i915_ppgtt_info() powerpc: Initialise pci_io_base as early as possible mfd: da9053: Fix compiler warning message for uninitialised variable mfd: max77620: Fix FPS switch statements phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared usb: dwc3: st: Inform the reset framework that our reset line may be shared usb: host: ehci-st: Inform the reset framework that our reset line may be shared usb: host: ohci-st: Inform the reset framework that our reset line may be shared ...
2016-07-06FDT: Add a helper to get the subnode by given nameShannon Zhao
Sometimes it needs to check if there is a subnode of given node in FDT by given name. Introduce this helper to get the subnode if it exists. CC: Rob Herring <robh@kernel.org> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Julien Grall <julien.grall@arm.com>
2016-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Several cases of overlapping changes, except the packet scheduler conflicts which deal with the addition of the free list parameter to qdisc_enqueue(). Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-28of_mdio: select fixed phy support unconditionallyArnd Bergmann
Calling the fixed-phy functions when CONFIG_FIXED_PHY=m as a previous change tried cannot work if the caller is in built-in code: drivers/of/built-in.o: In function `of_phy_register_fixed_link': of_reserved_mem.c:(.text+0x85e0): undefined reference to `fixed_phy_register' Making of_mdio depend on 'FIXED_PHY || !FIXED_PHY' would solve this dependency by enforcing that OF_MDIO itself becomes a loadable module when FIXED_PHY=y, but that creates a different dependency as it breaks any built-in ethernet driver that uses of_mdio. Making FIXED_PHY a bool option also cannot work, since it depends on PHYLIB, which again is tristate. This version now uses 'select FIXED_PHY' to ensure that the fixed-phy portion of of_mdio is not optional. The main downside of this is a small increase in code size for cases that do not need fixed phy support, but it should avoid all of the link-time problems. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: d1bd330a229f ("of_mdio: Enable fixed PHY support if driver is a module") Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-24of/irq: Mark initialised interrupt controllers as populatedJon Hunter
For interrupt controllers successfully initialised early via device-tree, mark these interrupt controllers as populated so we don't unnecessarily create a device and populate any platform data later on in the boot sequence when we populate all the various platform devices. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Rob Herring <robh@kernel.org>