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Chip detection may fail if the chip is in some odd state for example after
system restart. Chip doesn't have HW reset line.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Chip detection may fail if the chip is in some odd state for example after
system restart. Chip doesn't have HW reset line.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Delays were little bit too long. Adjust delay times and add some comments
to them.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Delays were little bit too long. Adjust delay times and add some comments
to them.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A small macro changed to inline function to have proper type checking.
Inline added to two similar small functions.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some small macros changed to inline functions to have proper type
checking.
Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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UV hardware defines 256 memory protection regions versus the baseline 64
with increasing size for the SN2 ia64. This was overlooked when XPC was
modified to accomodate both UV and SN2.
Without this patch, a user could reconfigure their existing system and
suddenly disable cross-partition communications with no indication of what
has gone wrong. It also prevents larger configurations from using
cross-partition communication.
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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While running randconfg with ktest.pl I stumbled upon this bug:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000003
IP: [<ffffffff815fe44f>] strstr+0x39/0x86
PGD 0
Oops: 0000 [#1] SMP
last sysfs file:
CPU 0
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.37-rc1-test+ #6 DG965MQ/
RIP: 0010:[<ffffffff815fe44f>] [<ffffffff815fe44f>] strstr+0x39/0x86
RSP: 0018:ffff8800797cbd80 EFLAGS: 00010213
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffffffffffff
RDX: 0000000000000000 RSI: ffffffff82eb7ac9 RDI: 0000000000000003
RBP: ffff8800797cbda0 R08: ffff880000000003 R09: 0000000000030725
R10: ffff88007d294c00 R11: 0000000000014c00 R12: 0000000000000020
R13: ffffffff82eb7ac9 R14: ffffffffffffffff R15: ffffffff82eb7b08
FS: 0000000000000000(0000) GS:ffff88007d200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000003 CR3: 0000000002a1d000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff8800797ca000, task ffff8800797d0000)
Stack:
00000000000000ba ffffffff82eb7ac9 ffffffff82eb7ab8 00000000000000ba
ffff8800797cbdf0 ffffffff81e2050f ffff8800797cbdc0 00000000815f913b
ffff8800797cbe00 ffffffff82eb7ab8 0000000000000000 0000000000000000
Call Trace:
[<ffffffff81e2050f>] dmi_matches+0x117/0x154
[<ffffffff81e205d7>] dmi_check_system+0x3d/0x8d
[<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
[<ffffffff82e1ad49>] nas_gpio_init+0x24/0x2c8
[<ffffffff820d750d>] ? wm8350_led_init+0x0/0x20
[<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
[<ffffffff810022f7>] do_one_initcall+0xab/0x1b2
[<ffffffff82da749c>] kernel_init+0x248/0x331
[<ffffffff8100e624>] kernel_thread_helper+0x4/0x10
[<ffffffff82da7254>] ? kernel_init+0x0/0x331
Found that the nas_led_whitelist dmi_system_id structure array had no
NULL end delimiter, causing the dmi_check_system() loop to read an
undefined entry.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Dave Hansen <dave@sr71.net>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'upstream/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: (23 commits)
xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.
xen: set IO permission early (before early_cpu_init())
xen: re-enable boot-time ballooning
xen/balloon: make sure we only include remaining extra ram
xen/balloon: the balloon_lock is useless
xen: add extra pages to balloon
xen: make evtchn's name less generic
xen/evtchn: the evtchn device is non-seekable
Revert "xen/privcmd: create address space to allow writable mmaps"
xen/events: use locked set|clear_bit() for cpu_evtchn_mask
xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore
xen/xenfs: update xenfs_mount for new prototype
xen: fix header export to userspace
xen: implement XENMEM_machphys_mapping
xen: set vma flag VM_PFNMAP in the privcmd mmap file_op
xen: xenfs: privcmd: check put_user() return code
xen/evtchn: add missing static
xen/evtchn: Fix name of Xen event-channel device
xen/evtchn: don't do unbind_from_irqhandler under spinlock
xen/evtchn: remove spurious barrier
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
of/phylib: Use device tree properties to initialize Marvell PHYs.
phylib: Add support for Marvell 88E1149R devices.
phylib: Use common page register definition for Marvell PHYs.
qlge: Fix incorrect usage of module parameters and netdev msg level
ipv6: fix missing in6_ifa_put in addrconf
SuperH IrDA: correct Baud rate error correction
atl1c: Fix hardware type check for enabling OTP CLK
net: allow GFP_HIGHMEM in __vmalloc()
bonding: change list contact to netdev@vger.kernel.org
e1000: fix screaming IRQ
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: EHCI: fix obscure race in ehci_endpoint_disable
USB: gadget: AT91: fix typo in atmel_usba_udc driver
USB: isp1362-hcd - fix section mismatch warning
USB: EHCI: AMD periodic frame list table quirk
USB: OTG: langwell_otg: fix up some sysfs attribute permissions
USB: misc: usbsevseg: fix up some sysfs attribute permissions
USB: misc: usbled: fix up some sysfs attribute permissions
USB: misc: trancevibrator: fix up a sysfs attribute permission
USB: misc: cypress_cy7c63: fix up some sysfs attribute permissions
USB: storage: sierra_ms: fix sysfs file attribute
USB: ehci: fix debugfs 'lpm' permissions
USB: atm: ueagle-atm: fix up some permissions on the sysfs files
xhci: Fix command ring replay after resume.
xHCI: fix wMaxPacketSize mask
xHCI: release spinlock when setup interrupt
xhci: Remove excessive printks with shared IRQs.
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upstream/for-linus
* upstream/core:
xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.
xen: set IO permission early (before early_cpu_init())
xen: re-enable boot-time ballooning
xen/balloon: make sure we only include remaining extra ram
xen/balloon: the balloon_lock is useless
xen: add extra pages to balloon
xen/events: use locked set|clear_bit() for cpu_evtchn_mask
xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore
xen: implement XENMEM_machphys_mapping
* upstream/xenfs:
Revert "xen/privcmd: create address space to allow writable mmaps"
xen/xenfs: update xenfs_mount for new prototype
xen: fix header export to userspace
xen: set vma flag VM_PFNMAP in the privcmd mmap file_op
xen: xenfs: privcmd: check put_user() return code
* upstream/evtchn:
xen: make evtchn's name less generic
xen/evtchn: the evtchn device is non-seekable
xen/evtchn: add missing static
xen/evtchn: Fix name of Xen event-channel device
xen/evtchn: don't do unbind_from_irqhandler under spinlock
xen/evtchn: remove spurious barrier
xen/evtchn: ports start enabled
xen/evtchn: dynamically allocate port_user array
xen/evtchn: track enabled state for each port
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When we allocate a vector for MSI/MSI-X we save away the PIRQ, and the
vector value. When we unmap (de-allocate) the MSI/MSI-X vector(s) we
need to provide the PIRQ and the vector value. What we did instead
was to provide the GSI (which was zero) and the vector value, and we
got these unhappy error messages:
(XEN) irq.c:1575: dom0: pirq 0 not mapped
[ 7.733415] unmap irq failed -22
This patches fixes this and we use the PIRQ value instead of the GSI
value.
CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Some aspects of PHY initialization are board dependent, things like
indicator LED connections and some clocking modes cannot be determined
by probing. The dev_flags element of struct phy_device can be used to
control these things if an appropriate value can be passed from the
Ethernet driver. We run into problems however if the PHY connections
are specified by the device tree. There is no way for the Ethernet
driver to know what flags it should pass.
If we are using the device tree, the struct phy_device will be
populated with the device tree node corresponding to the PHY, and we
can extract extra configuration information from there.
The next question is what should the format of that information be?
It is highly device specific, and the device tree representation
should not be tied to any arbitrary kernel defined constants. A
straight forward representation is just to specify the exact bits that
should be set using the "marvell,reg-init" property:
phy5: ethernet-phy@5 {
reg = <5>;
compatible = "marvell,88e1149r";
marvell,reg-init =
/* led[0]:1000, led[1]:100, led[2]:10, led[3]:tx */
<3 0x10 0 0x5777>, /* Reg 3,16 <- 0x5777 */
/* mix %:0, led[0123]:drive low off hiZ */
<3 0x11 0 0x00aa>, /* Reg 3,17 <- 0x00aa */
/* default blink periods. */
<3 0x12 0 0x4105>, /* Reg 3,18 <- 0x4105 */
/* led[4]:rx, led[5]:dplx, led[45]:drive low off hiZ */
<3 0x13 0 0x0a60>; /* Reg 3,19 <- 0x0a60 */
};
phy6: ethernet-phy@6 {
reg = <6>;
compatible = "marvell,88e1118";
marvell,reg-init =
/* Fix rx and tx clock transition timing */
<2 0x15 0xffcf 0>, /* Reg 2,21 Clear bits 4, 5 */
/* Adjust LED drive. */
<3 0x11 0 0x442a>, /* Reg 3,17 <- 0442a */
/* irq, blink-activity, blink-link */
<3 0x10 0 0x0242>; /* Reg 3,16 <- 0x0242 */
};
The Marvell PHYs have a page select register at register 22 (0x16), we
can specify any register by its page and register number. These are
the first and second word. The third word contains a mask to be ANDed
with the existing register value, and the fourth word is ORed with the
result to yield the new register value. The new marvell_of_reg_init
function leaves the page select register unchanged, so a call to it
can be dropped into the .config_init functions without unduly
affecting the state of the PHY.
If CONFIG_OF_MDIO is not set, there is no of_node, or no
"marvell,reg-init" property, the PHY initialization is unchanged.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The 88E1149R is 10/100/1000 quad-gigabit Ethernet PHY. The
.config_aneg function can be shared with 88E1118, but it needs its own
.config_init.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The definition of the Marvell PHY page register is not specific to
88E1121, so rename the macro to MII_MARVELL_PHY_PAGE, and use it
throughout.
Suggested-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Driver appears to be mistaking the permission field with default value
in the case of debug and qlge_irq_type.
Driver is also passing debug as a bitmask into netif_msg_init()
which wants a number of bits. Ron Mercer suggests we should
change this to pass in -1 so the defaults get used instead,
which makes the default much less verbose.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It looks to me as if the second value of rate_err_array is intended
to be a decimal 625. However, with a leading 0 it becomes an octal
constant, and as such evaluates to a decimal 405.
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 496c185c9495629ef1c65387cb2594578393cfe0 "atl1c: Add support
for Atheros AR8152 and AR8152" added the condition:
if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c_b)
for enabling OTP CLK, and the condition:
if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)
for disabling OTP CLK. Since the two previously defined hardware
types are athr_l1c and athr_l2c, the latter condition appears to be
the correct one. Change the former to match.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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VMWare reports that the e1000 driver has a bug when bringing down the
interface, such that interrupts are not disabled in the hardware but the
driver stops reporting that it consumed the interrupt.
The fix is to set the driver's "down" flag later in the routine,
after all the timers and such have exited, preventing the interrupt
handler from being called and exiting early without handling the
interrupt.
CC: Anupam Chanda <anupamc@vmware.com>
CC: stable kernel <stable@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the user specifies mem= on the kernel command line, some or all
of the extra memory E820 region may be clipped away, so make sure
we don't try to add more extra memory than exists in E820.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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The balloon_lock is useless, since it protects nothing against nothing.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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Add extra pages in the pseudo-physical address space to the balloon
so we can extend into them later.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits)
net: fix kernel-doc for sk_filter_rcu_release
be2net: Fix to avoid firmware update when interface is not open.
netfilter: fix IP_VS dependencies
net: irda: irttp: sync error paths of data- and udata-requests
ipv6: Expose reachable and retrans timer values as msecs
ipv6: Expose IFLA_PROTINFO timer values in msecs instead of jiffies
3c59x: fix build failure on !CONFIG_PCI
ipg.c: remove id [SUNDANCE, 0x1021]
net: caif: spi: fix potential NULL dereference
ath9k_htc: Avoid setting QoS control for non-QoS frames
net: zero kobject in rx_queue_release
net: Fix duplicate volatile warning.
MAINTAINERS: Add stmmac maintainer
bonding: fix a race in IGMP handling
cfg80211: fix can_beacon_sec_chan, reenable HT40
gianfar: fix signedness issue
net: bnx2x: fix error value sign
8139cp: fix checksum broken
r8169: fix checksum broken
rds: Integer overflow in RDS cmsg handling
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
sata_via: apply magic FIFO fix to vt6420 too
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: fix typo in keycode validation supporting large scancodes
Input: aiptek - tighten up permissions on sysfs attributes
Input: sysrq - pass along lone Alt + SysRq
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git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
drm/i915: Disable FBC on Ironlake to save 1W
drm/i915: Take advantage of auto-polling CRT hotplug detection on PCH hardware
drm/i915/crt: Introduce struct intel_crt
drm/i915: Do not hold mutex when faulting in user addresses
drm: radeon: fix error value sign
drm/radeon/kms: fix and unify tiled buffer alignment checking for r6xx/7xx
drm/i915: Retire any pending operations on the old scanout when switching
drm/i915: Fix I2C adapter registration
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (40 commits)
drm/radeon/kms: i2c s/sprintf/snprintf/g for safety
drm/radeon/kms: fix i2c pad masks on rs4xx
drm/ttm: Fix up a theoretical deadlock
drm/radeon/kms: fix tiling info on evergreen
drm/radeon/kms: fix alignment when allocating buffers
drm/vmwgfx: Fix up an error path during bo creation
drm/radeon/kms: register an i2c adapter name for the dp aux bus
drm/radeon/kms/atom: add proper external encoders support
drm/radeon/kms/atom: cleanup and unify DVO handling
drm/radeon/kms: properly power up/down the eDP panel as needed (v4)
drm/radeon/kms/atom: set sane defaults in atombios_get_encoder_mode()
drm/radeon/kms: turn the backlight off explicitly for dpms
drm/radeon/kms: fix typo in r600 cs checker
drm: radeon: fix error value sign
drm/radeon/kms: fix and unify tiled buffer alignment checking for r6xx/7xx
nouveau: Acknowledge HPD irq in handler, not bottom half
drm/nouveau: Fix a few confusions between "chipset" and "card_type".
drm/nouveau: don't expose backlight control when available through ACPI
drm/nouveau/pm: improve memtiming mappings
drm/nouveau: Make PCIE GART size depend on the available RAMIN space.
...
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vt6420 has the same FIFO overflow problem as vt6421 when combined with
certain devices. This patch applies the magic fix to vt6420 too.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Martin Qvist <q@maq.dk>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Since interrupts are enabled only when open is called on the interface,
Attempting a firmware update operation when interface is down could lead to
partial success or failure of operation. This fix fails the request if
netif_running is false.
Signed-off-by: Sarveshwar Bandi <Sarveshwar.Bandi@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Frame buffer compression is broken on Ironlake due to buggy hardware.
Currently it is disabled through chicken bits, but it still consumes
over 1W more than if we simply never attempt to enable the FBC code
paths.
Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
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Both IBX and CPT have an automatic hotplug detection mode which appears to work reliably enough
that we can dispense with the manual force hotplug trigger stuff. This means that
hotplug detection is as simple as reading the current hotplug register values.
The first time the hotplug detection is activated, the code synchronously waits for a hotplug
sequence in case the hardware hasn't bothered to do a detection cycle since being initialized.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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We will use this structure in future patches to store CRT specific
information on the encoder.
Split out and tweaked from a patch by Keith Packard.
Signed-off-by: Keith Packard <keithp@kithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Linus Torvalds found that it was rather trivial to trigger a system
freeze:
In fact, with lockdep, I don't even need to do the sysrq-d thing: it
shows the bug as it happens. It's the X server taking the same lock
recursively.
Here's the problem:
=============================================
[ INFO: possible recursive locking detected ]
2.6.37-rc2-00012-gbdbd01a #7
---------------------------------------------
Xorg/2816 is trying to acquire lock:
(&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c626c>] i915_gem_fault+0x50/0x17e
but task is already holding lock:
(&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c403b>] i915_mutex_lock_interruptible+0x28/0x4a
other info that might help us debug this:
2 locks held by Xorg/2816:
#0: (&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c403b>] i915_mutex_lock_interruptible+0x28/0x4a
#1: (&mm->mmap_sem){++++++}, at: [<ffffffff81022d4f>] page_fault+0x156/0x37b
This recursion was introduced by rearranging the locking to avoid the
double locking on the fast path (4f27b5d and fbd5a26d) and the
introduction of the prefault to encourage the fast paths (b5e4f2b). In
order to undo the problem, we rearrange the code to perform the access
validation upfront, attempt to prefault and then fight for control of the
mutex. the best case scenario where the mutex is uncontended the
prefaulting is not wasted.
Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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* xen/dev-evtchn:
xen/evtchn: add missing static
xen/evtchn: Fix name of Xen event-channel device
xen/evtchn: don't do unbind_from_irqhandler under spinlock
xen/evtchn: remove spurious barrier
xen/evtchn: ports start enabled
xen/evtchn: dynamically allocate port_user array
xen/evtchn: track enabled state for each port
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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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This reverts commit 24a89b5be4cf2b7f1b49b56b6cb4a7b71fccf241.
We should no longer need an address space now that we're correctly
setting VM_PFNMAP on our vmas.
Conflicts:
drivers/xen/xenfs/super.c
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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As per advice from Jean Delvare.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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These got lost in the last i2c cleanup. Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=23222
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] remove SCSI host lock and serial number usage from ata_scsi_queuecmd
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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Kernel build fail for cx25821-video has depends on smp_lock.h header
file, but the dependency is removed in recent commit 451a3c24b013.
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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VORTEX_PCI() could return NULL so it needs to be casted before
accessing any member of struct pci_dev. This fixes following
build failure. Likewise VORTEX_EISA() was changed also.
CC [M] drivers/net/3c59x.o
drivers/net/3c59x.c: In function 'acpi_set_WOL':
drivers/net/3c59x.c:3211:39: warning: dereferencing 'void *' pointer
drivers/net/3c59x.c:3211:39: error: request for member 'current_state' in something not a structure or union
make[3]: *** [drivers/net/3c59x.o] Error 1
make[2]: *** [drivers/net/3c59x.o] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ipg.c:
The id [SUNDANCE, 0x1021] (=[0x13f0, 0x1021]) is defined
at dl2k.h and ipg.c.
But this device works better with dl2k driver.
This problem is similar with the commit
[25cca5352712561fba97bd37c495593d641c1d39
ipg: Remove device claimed by dl2k from pci id table]
at 11 Feb 2010.
Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
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alloc_netdev() is not checked here for NULL return value. dev is
check instead. It might lead to NULL dereference of ndev.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Setting tid information in the TX header is required only for QoS
frames. Not handling this case causes severe data loss with some APs.
Cc: stable@kernel.org
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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RCU conversion in IGMP code done in net-next-2.6 raised a race in
__bond_resend_igmp_join_requests().
It iterates in_dev->mc_list without appropriate protection (RTNL, or
read_lock on in_dev->mc_list_lock).
Another cpu might delete an entry while we use it and trigger a fault.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Check the input_keymap_entry keycode size (u32) instead of the device's
(void*) when validating that keycode value can be stored in the keymap.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=22722
Signed-off-by: Mattia Dongili <malattia@linux.it>
Tested-by: Norbert Preining <preining@logic.at>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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A process suspended waiting for a higher sequence or no sequence to unreserve,
a bo may be beaten to the reservation by a process with a lower sequence.
In that case the first process should give up trying to reserve and
return -EAGAIN. In order for that to happen, we must wake waiting processes
when we change sequence, so that they have a chance to detect the new
sequence.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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