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2015-04-21Merge tag 'char-misc-4.1-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver patchset for 4.1-rc1. Lots of different driver subsystem updates here, nothing major, full details are in the shortlog. All of this has been in linux-next for a while" * tag 'char-misc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (133 commits) mei: trace: remove unused TRACE_SYSTEM_STRING DTS: ARM: OMAP3-N900: Add lis3lv02d support Documentation: DT: lis302: update wakeup binding lis3lv02d: DT: add wakeup unit 2 and wakeup threshold lis3lv02d: DT: use s32 to support negative values Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case Drivers: hv: hv_balloon: correctly handle val.freeram<num_pages case mei: replace check for connection instead of transitioning mei: use mei_cl_is_connected consistently mei: fix mei_poll operation hv_vmbus: Add gradually increased delay for retries in vmbus_post_msg() Drivers: hv: hv_balloon: survive ballooning request with num_pages=0 Drivers: hv: hv_balloon: eliminate jumps in piecewiese linear floor function Drivers: hv: hv_balloon: do not online pages in offline blocks hv: remove the per-channel workqueue hv: don't schedule new works in vmbus_onoffer()/vmbus_onoffer_rescind() hv: run non-blocking message handlers in the dispatch tasklet coresight: moving to new "hwtracing" directory coresight-tmc: Adding a status interface to sysfs coresight: remove the unnecessary configuration coresight-default-sink ...
2015-04-13mei: trace: remove unused TRACE_SYSTEM_STRINGTomas Winkler
fix warning: include/trace/ftrace.h:28:0: note: this is the location of the previous definition ^ In file included from include/trace/define_trace.h:90:0, from drivers/misc/mei/mei-trace.h:76, from drivers/misc/mei/mei-trace.c:21: include/trace/ftrace.h:28:0: warning: "TRACE_SYSTEM_STRING" redefined Cc: Stephen Rothwell <sfr@canb.auug.org.au> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-12Merge branch 'iocb' into for-nextAl Viro
2015-04-03mei: replace check for connection instead of transitioningTomas Winkler
The function mei_cl_is_transitioning is just opposite of mei_cl_is_connected. What we actually wanted to check is if we lost connection so we can discard the check for transition and check for 'not connected' Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-03mei: use mei_cl_is_connected consistentlyTomas Winkler
Replace open coded check for cl->state !=/== MEI_FILE_CONNECTED with mei_cl_is_connected function. Note that cl->state != MEI_FILE_CONNECTED is not the same as cl->state == MEI_FILE_DISCONNECTED Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-03mei: fix mei_poll operationTomas Winkler
mei_poll returned with POLLIN w/o checking whether the operation has really completed. remove redundant check and locking in amthif specific handler Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26fs: move struct kiocb to fs.hChristoph Hellwig
struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-03-25mei: fix regression on NFC connectionTomas Winkler
In mei_host_client_init function we enable the all internal connected clients including NFC. This is done before we set the device to enabled state and let userspace call open. We need to check only for MEI_FILE_CONNECTED in mei_cl_is_connected in order to enable the communication with the clients before MEI_DEV_ENABLED is set. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-09Merge 4.0-rc3 into char-misc-nextGreg Kroah-Hartman
We want the mei fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-04mei: trace: fix missing include to linux/device.hTomas Winkler
Fix warning (discovered using randconfig) drivers/misc/mei/mei-trace.h:30:24: warning: 'struct device' declared inside parameter list TP_PROTO(const struct device *dev, const char *reg, u32 offs, u32 val), Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-04mei: free me client references on host initTomas Winkler
Fx fixes leak introduced by: commit b7d885145538 ("mei: revamp me clients list handling") Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: bus: call device disable handler prior to disconnectionTomas Winkler
call device's disable handler prior to disconnection so it can possibly close the communication with fw client in graceful way Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: allow read concurrencyTomas Winkler
Replace clunky read state machine with read stack implemented as per client read list, this is important mostly for mei drivers with unsolicited reads Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: simplify io callback disposalTomas Winkler
Simplify disposal of io callback by removing the callback implicitly from its lookup list inside mei_io_cb_free Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: add mei_cl_alloc_linked functionTomas Winkler
Add convenient wrapper mei_cl_alloc_linked to simplify error handling Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: always initialize the callback with the intended operation typeTomas Winkler
We set the operation type at initialization time as each cb is used only for a single type of operation As a byproduct we add a convenient wrapper for allocating cb with the data buffer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: use only one buffer in callbackTomas Winkler
The callback structure is used exclusively for reading or writing therefore there is no reason to hold both response and request buffers in the callback structure Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: iamthif: use regular client read functionsTomas Winkler
Reduce code duplication in amthif by reusing regular client read functions. The change also removes the need for amthif own buffering Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: iamthif: use client write functionsTomas Winkler
Reduce code duplication in amthif code by reusing regular client write functions. Add completed flag to cb so amthif client can add rx credits on write completion Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: iamthif: send flow control as a regular clientTomas Winkler
Reuse common client mechanism for sending flow control hbm message. Add new function mei_amthif_read_start similar to mei_cl_read_start that puts control flow request onto the control write queue and drop mei_amthif_irq_read function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: iamthif: remove useless iamthif_ioctl variableTomas Winkler
iamthif_ioctl is obsolete and can be safely dropped Currently it is set to true during driver runtime Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: iamthif: fix device reset on mei_amthif_irq_read_msgTomas Winkler
On failure mei_amthif_irq_read_msg returns an error that will cause device reset but the issue is software one so instead we should propagate error to caller and just clean the read queues. As a side effect also removes useless BUG_ONs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: fix device reset on mei_cl_irq_read_msg allocation failureTomas Winkler
On memory allocation failure mei_cl_irq_read_msg will return with error that will cause device reset. Instead we should propagate error to caller and just clean the read queues. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: fix function names and format in KDocAlexander Usyskin
Align functions names in KDoc with real ones. Fix comment format to be KDoc and fix wrong syntax there. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: me: change power gating function name conventionsAlexander Usyskin
The current power gating naming was confusing, we wish to swap meanings of register and flow level power gating terms, For registers writing level use terms set and unset: mei_me_pg_set, mei_me_pg_unset For flow/high level use power gating enter and power gating exit terms mei_me_pg_enter_sync, mei_me_pg_exit_sync Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: me: add io register tracingTomas Winkler
To make debugging a bit easier we add me register access tracing <debugfs>/tracing/events/mei/mei_reg_{read,write} Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: me: use io register wrappers consistentlyTomas Winkler
1. Use mei_device structure as the first argument to the io register access wrappers so we'll have access to the device structure needed for tracing. 2. Use wrapper consistently Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: revamp me clients list handlingTomas Winkler
1. Use rw lock to access the me_clients list 2. Reuse already defined find functions also when removing particular me client 3. Add wrappers for addition and deletion Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-02mei: make device disabled on stop unconditionallyAlexander Usyskin
Set the internal device state to to disabled after hardware reset in stop flow. This will cover cases when driver was not brought to disabled state because of an error and in stop flow we wish not to retry the reset. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-03mei: me: release hw from reset only during the reset flowAlexander Usyskin
We might enter the interrupt handler with hw_ready already set, but prior we actually started the reset flow. To soleve this we move the reset release from the interrupt handler to the HW start wait function which is part of the reset sequence. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-03mei: mask interrupt set bit on clean reset bitAlexander Usyskin
We should mask interrupt set bit when writing back hcsr value in reset bit clean-up. This is refinement for mei: clean reset bit before reset commit b13a65ef190e488e2761d65bdd2e1fe8a3a125f5 Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25mei: add reference counting for me clientsTomas Winkler
To support dynamic addition and removal of me clients we add reference counter. Update kdoc with locking requirements. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-18Merge 3.19-rc5 into char-misc-nextGreg Kroah-Hartman
We want the 3.19-rc5 fixes in here for our testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12mei: use uuid, me_addr tuple addressing also for flow control creditsTomas Winkler
Add uuid, me_addr addressing also for flow control credits. The only exception in cases for single buffer clients for which the host address in flow credits response is always 0 To in order to deal with add/remove race between fw and driver clients addressing we need to use [uuid, me_addr] tuple to address the clients Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-12mei: bus: use ssize_t as the return type for send and receiveTomas Winkler
Mei bus receive and send function may return either number of transmitted bytes or errno. It is better to use ssize_t type for that purpose that mixing size_t with int. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-09mei: clean reset bit before resetAlexander Usyskin
H_RST bit in H_CSR register may be found lit before reset is started, for example if preceding reset flow hasn't completed. In that case asserting H_RST will be ignored, therefore we need to clean H_RST bit to start a successful reset sequence. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-12-15Merge tag 'char-misc-3.19-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver update for 3.19-rc1 Lots of little things all over the place in different drivers, and a new subsystem, "coresight" has been added. Full details are in the shortlog" * tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (73 commits) parport: parport_pc, do not remove parent devices early spmi: Remove shutdown/suspend/resume kernel-doc carma-fpga-program: drop videobuf dependency carma-fpga: drop videobuf dependency carma-fpga-program.c: fix compile errors i8k: Fix temperature bug handling in i8k_get_temp() cxl: Name interrupts in /proc/interrupt CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warning coresight-replicator: remove .owner field for driver coresight: fixed comments in coresight.h coresight: fix typo in comment in coresight-priv.h coresight: bindings for coresight drivers coresight: Adding ABI documentation w1: support auto-load of w1_bq27000 module. w1: avoid potential u16 overflow cn: verify msg->len before making callback mei: export fw status registers through sysfs mei: read and print all six FW status registers mei: txe: add cherrytrail device id mei: kill cached host and me csr values ...
2014-12-05misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/misc/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-27mei: export fw status registers through sysfsTomas Winkler
The interface is for applications that monitor the fw health. We use device_create_with_groups interface to register attribute with the mei class device Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-27mei: read and print all six FW status registersAlexander Usyskin
ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-27mei: txe: add cherrytrail device idTomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-27mei: kill cached host and me csr valuesTomas Winkler
Kill host_hw_status and me_hw_state from me hw structure that used to cache host and me csr values. We do not use the cached values across the function calls anymore Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07mei: fix hbm MEI_HBM_STARTED ambiguityTomas Winkler
We have MEI_HBM_STARTED in two contexts one after start message was received and second after enumeration was completed. Because after start message reception we move immediately to the enumeration state, we need only the later meaning. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-07mei: nfc: clean nfc internal struct on host exitTomas Winkler
NFC internal structure cleaning was dropped by commit commit 487056932d372cc4f6c636f21a928d6667b151d7 Author: Tomas Winkler <tomas.winkler@intel.com> Date: Mon Feb 17 15:13:19 2014 +0200 mei: Remove all bus devices from the mei_dev list when stopping the MEI When stopping the MEI, we should remove and potentially unregister all bus devices queued on the mei_dev linked list. We allocate nfc_dev and free it across the reset so we do not keep it in dirty state Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: hbm: use client specific print functionsAlexander Usyskin
We have host client in connect/disconnect response processors, so use client print functions to simplify and unify code. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: debugfs: display also connectionless clientsTomas Winkler
<debugfs>meiX/meclients: display also fixed/connectionless clients Use better name for fixed client field: fixed_address is boolean and indicates whether a client is fixed or dynamic. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: use local cl variables in wd and amthifTomas Winkler
Use local cl variable instead of dev->iamthif_cl and dev->wd_cl as the first step to use dynamic allocation of these clients as their are not supported on all platforms Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: drop unneeded client NULL check in cb structureAlexander Usyskin
The pointer to client in the callback structure (cb->cl) can't be NULL with current locking. We can drop check and warnings as in some cases this just uselessly complicates the code flow. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-08Merge tag 'char-misc-3.18-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big set of driver patches for char/misc drivers. Nothing major in here, the shortlog goes into the details. All have been in the linux-next tree for a while with no issues" * tag 'char-misc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (80 commits) mei: mei_txe_fw_sts can be static mei: fix kernel-doc warnings mei: fix KDoc documentation formatting mei: drop me_client_presentation_num mei: trivial: fix errors in prints in comments mei: remove include to pci header from mei module files mei: push pci cfg structure me hw mei: remove the reference to pdev from mei_device mei: move fw_status back to hw ops handlers mei: get rid of most of the pci dependencies in mei mei: push all standard settings into mei_device_init mei: move mei_hbm_hdr function from hbm.h the hbm.c mei: kill error message for allocation failure mei: nfc: fix style warning mei: fix style warning: Missing a blank line after declarations mei: pg: fix cat and paste error in comments mei: debugfs: add single buffer indicator mei: debugfs: adjust print buffer mei: add hbm and pg state in devstate debugfs print Drivers: hv: vmbus: Enable interrupt driven flow control ...
2014-10-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull "trivial tree" updates from Jiri Kosina: "Usual pile from trivial tree everyone is so eagerly waiting for" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Remove MN10300_PROC_MN2WS0038 mei: fix comments treewide: Fix typos in Kconfig kprobes: update jprobe_example.c for do_fork() change Documentation: change "&" to "and" in Documentation/applying-patches.txt Documentation: remove obsolete pcmcia-cs from Changes Documentation: update links in Changes Documentation: Docbook: Fix generated DocBook/kernel-api.xml score: Remove GENERIC_HAS_IOMAP gpio: fix 'CONFIG_GPIO_IRQCHIP' comments tty: doc: Fix grammar in serial/tty dma-debug: modify check_for_stack output treewide: fix errors in printk genirq: fix reference in devm_request_threaded_irq comment treewide: fix synchronize_rcu() in comments checkstack.pl: port to AArch64 doc: queue-sysfs: minor fixes init/do_mounts: better syntax description MIPS: fix comment spelling powerpc/simpleboot: fix comment ...
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