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2011-08-04drm/radeon: Extended DDC Probing for Connectors with Improperly Wired DDC ↵Thomas Reim
Lines (here: Asus M2A-VM HDMI) Some integrated ATI Radeon chipset implementations with add-on HDMI card (e. g. Asus M2A-VM HDMI) indicate the availability of a DDC even when the add-on card is not plugged in or HDMI is disabled in BIOS setup. In this case, drm_get_edid() and drm_edid_block_valid() periodically dump data and kernel errors into system log files and onto terminals. For these connectors DDC probing is extended by a check for a correct EDID header. Only in case a valid EDID header is also found, the (HDMI or DVI) connector will be used by the Radeon driver. This prevents the kernel driver from useless flooding of logs and terminal sessions with EDID dumps and error messages. This patch adds a flag 'requires_extended_probe' to the radeon_connector structure. In function radeon_connector_needs_extended_probe() this flag can be set on a chipset family/vendor/connector type specific basis. In addition, function radeon_ddc_probe() has been adapted to perform extended DDC probing if required by the connector's flag. Requires function drm_edid_header_is_valid() in DRM module provided by [PATCH] drm: Separate EDID Header Check from EDID Block Check. Tested for kernel 2.6.35, 2.6.38 and 3.0 on Asus M2A-VM HDMI board BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=668196 BugLink: http://bugs.launchpad.net/bugs/7228066 Cc: <stable@kernel.org> Signed-off-by: Thomas Reim <reimth@gmail.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Acked-by: Stephen Michaels <Stephen.Micheals@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm: Separate EDID Header Check from EDID Block CheckThomas Reim
Provides function drm_edid_header_is_valid() for EDID header check and replaces EDID header check part of function drm_edid_block_valid() by a call of drm_edid_header_is_valid(). This is a prerequisite to extend DDC probing, e. g. in function radeon_ddc_probe() for Radeon devices, by a central EDID header check. Tested for kernel 2.6.35, 2.6.38 and 3.0 Cc: <stable@kernel.org> Signed-off-by: Thomas Reim <reimth@gmail.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Acked-by: Stephen Michaels <Stephen.Micheals@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm: Add NULL check about irq functionsJoonyoung Shim
The struct drm_driver has some function pointers for irq. They are gpu specific and some functions aren't essential things. This can prevents creation of unnecessary dummy function for irq. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm: Fix irq install error handlingJoonyoung Shim
The registered irq should be unregistered by free_irq() if irq_postinstall() returns the error after request_irq() is called successfully. [airlied: add vga switcheroo disable] Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm/radeon: fix potential NULL dereference in drivers/gpu/drm/radeon/atom.cBojan Prtvar
kzalloc() can return NULL, so I added check for it Signed-off-by: Bojan Prtvar <prtvar.b@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm/radeon: clean reg header filesFernando Luis Vázquez Cao
Reg header files are generated so they are not cleaned automagically. They need to be added to the clean-files list. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm/debugfs: Initialise empty variableEmil Velikov
[airlied: move char declaration] Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04Merge branch 'drm-intel-next' of ↵Dave Airlie
ssh://master.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6 into drm-fixes * 'drm-intel-next' of ssh://master.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6: (42 commits) drm/i915: allow cache sharing policy control drm/i915/hdmi: HDMI source product description infoframe support drm/i915/hdmi: split infoframe setting from infoframe type code drm: track CEA version number if present drm/i915: Try enabling RC6 by default (again) Revert "drm/i915/dp: Zero the DPCD data before connection probe" drm/i915/dp: wait for previous AUX channel activity to clear drm/i915: don't use uninitialized EDID bpc values when picking pipe bpp drm/i915/pch: Save/restore PCH_PORT_HOTPLUG across suspend drm/i915: apply phase pointer override on SNB+ too drm/i915: Add quirk to disable SSC on Sony Vaio Y2 drm/i915: provide more error output when mode sets fail drm/i915: add GPU max frequency control file i915: add Dell OptiPlex FX170 to intel_no_lvds drm/i915: Ignore GPU wedged errors while pinning scanout buffers drm/i915/hdmi: send AVI info frames on ILK+ as well drm/i915: fix CB tuning check for ILK+ drm/i915: Flush other plane register writes drm/i915: flush plane control changes on ILK+ as well drm/i915: apply timing generator bug workaround on CPT and PPT ...
2011-08-04drm/radeon/kms: add thermal chip quirk for asus 9600xtAlex Deucher
The board has an lm63 compatible thermal chip, but no thermal chip entry in the vbios tables. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=39513 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm/radeon: off by one in check_reg() functionsDan Carpenter
This off by one range check was copy and pasted a couple places. It's not really harmful, but we should fix it anyway. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04drm/radeon/kms: fix version comment due to merge timingAlex Deucher
Compute cs support was actually added in 2.11.0 rather than 2.10.0, but the patch was written prior. Update comment to match. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-04ixgbe: fix PHY link setup for 82599Emil Tantilov
Fix pointer to setup_link for 82599. This resolves some link issues when advertising modes unsupported by the link partner. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04ixgbe: fix __ixgbe_notify_dca() bail out codeDon Skidmore
The way __ixgbe_notify_dca() was currently set up it would not be possible to add a requester. Both cases of the IXGBE_FLAG_DCA_ENABLED bit being on and off would lead to the function exiting for a DCA_PROVIDER_ADD. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04igb: fix WOL on second port of i350 deviceCarolyn Wyborny
This patch fixes a problem where WOL would fail on second port of i350 device. Reported-by: Martin Wilck <martin.wilck@ts.fujitsu.com> Reported-by: Stefan Assmann<sassmann@redhat.com> Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04e1000e: minor re-order of #include filesBruce Allan
The recent commit a6b7a407 when back-ported to the out-of-tree e1000e driver caused a compilation error on older kernels which required a re-ordering of the #include files. This cosmetic patch syncs the two drivers for easier maintainability. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04e1000e: remove unnecessary check for NULL pointerBruce Allan
The array shadow_ram is never NULL. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04intel drivers: repair missing flush operationsJesse Brandeburg
after review of all intel drivers, found several instances where drivers had the incorrect pattern of: memory mapped write(); delay(); which should always be: memory mapped write(); write flush(); /* aka memory mapped read */ delay(); explanation: The reason for including the flush is that writes can be held (posted) in PCI/PCIe bridges, but the read always has to complete synchronously and therefore has to flush all pending writes to a device. If a write is held and followed by a delay, the delay means nothing because the write may not have reached hardware (maybe even not until the next read) Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2011-08-04Revert "dt: add of_alias_scan and of_alias_get_id"Grant Likely
This reverts commit 750f463a749e28464151ad26938d11b07b1c43cb. of_alias_* still needs work to be generalized for 'promtree' dt platforms, and to no implicitly create entries for available ids. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-08-04dt: remove of_alias_get_id() referenceGrant Likely
of_alias_get_id() is broken and being reverted. Remove the reference to it and replace with a single incrementing id number. There is no risk of regression here on the imx driver since the imx change to use of_alias_get_id() is commit 22698aa2, "serial/imx: add device tree probe support" which is new for v3.1, and it won't get used unless CONFIG_OF is enabled and the board is booted using a device tree. A single incrementing integer is sufficient for now. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2011-08-04sparc: Fix __atomic_add_unless() return value.Josip Rodin
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04macb: restore wrap bit when performing underrun cleanupTord Andersson
When TX underrun occurs, a cleanup is performed that marks all buffers as used. As a side effect it also clears the wrap bit in the last buffer. This patch will restore the wrap bit. Signed-off-by: Tord Andersson <tord.andersson@endian.se> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04cdc_ncm: fix endianness problem.Giuseppe Scrivano
Fix a misusage of the struct usb_cdc_notification to pass arguments to the usb_control_msg function. The usb_control_msg function expects host endian arguments but usb_cdc_notification stores these values as little endian. Now usb_control_msg is directly invoked with host endian values. Signed-off-by: Giuseppe Scrivano <giuseppe@southpole.se> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04sparc: use kbuild-generic support for true asm-generic header filesSam Ravnborg
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04drivers/ide/cy82c693.c: Add missing pci_dev_putJulia Lawall
Pci_get_slot calls pci_dev_get, so pci_dev_put is needed before leaving the function in the case where pci_get_slot is locally used. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ local idexpression x; expression e; @@ *x = pci_get_slot(...) ... when != true x == NULL when != pci_dev_put(x) when != e = x when != if (x != NULL) {<+... pci_dev_put(x); ...+>} *return ...; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04ide: Fix irq flags madnessThomas Gleixner
commit ec1a123 (IDE: pass IRQ flags to the IDE core) introduced the bogosity of passing unfiltered resource->flags to the irq_flags which are used for request_irq. It results in random bits set (especially IORESOURCE_IRQ which maps to IRQF_PER_CPU). Filter the bits proper. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-04slab, lockdep: Annotate the locks before using themPeter Zijlstra
Fernando found we hit the regular OFF_SLAB 'recursion' before we annotate the locks, cure this. The relevant portion of the stack-trace: > [ 0.000000] [<c085e24f>] rt_spin_lock+0x50/0x56 > [ 0.000000] [<c04fb406>] __cache_free+0x43/0xc3 > [ 0.000000] [<c04fb23f>] kmem_cache_free+0x6c/0xdc > [ 0.000000] [<c04fb2fe>] slab_destroy+0x4f/0x53 > [ 0.000000] [<c04fb396>] free_block+0x94/0xc1 > [ 0.000000] [<c04fc551>] do_tune_cpucache+0x10b/0x2bb > [ 0.000000] [<c04fc8dc>] enable_cpucache+0x7b/0xa7 > [ 0.000000] [<c0bd9d3c>] kmem_cache_init_late+0x1f/0x61 > [ 0.000000] [<c0bba687>] start_kernel+0x24c/0x363 > [ 0.000000] [<c0bba0ba>] i386_start_kernel+0xa9/0xaf Reported-by: Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311888176.2617.379.camel@laptop Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-04lockdep: Clear whole lockdep_map on initializationTejun Heo
lockdep_init_map() only initializes parts of lockdep_map and triggers kmemcheck warning when it is copied as a whole. There isn't anything to be gained by clearing selectively. memset() the whole structure and remove loop for ->class_cache[] clearing. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=35532 Signed-off-by: Tejun Heo <tj@kernel.org> Reported-and-tested-by: Christian Casteyde <casteyde.christian@free.fr> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=35532 Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110714131909.GJ3455@htj.dyndns.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-04slab, lockdep: Annotate slab -> rcu -> debug_object -> slabPeter Zijlstra
Lockdep thinks there's lock recursion through: kmem_cache_free() cache_flusharray() spin_lock(&l3->list_lock) <----------------. free_block() | slab_destroy() | call_rcu() | debug_object_activate() | debug_object_init() | __debug_object_init() | kmem_cache_alloc() | cache_alloc_refill() | spin_lock(&l3->list_lock) --' Now debug objects doesn't use SLAB_DESTROY_BY_RCU and hence there is no actual possibility of recursing. Luckily debug objects marks it slab with SLAB_DEBUG_OBJECTS so we can identify the thing. Mark all SLAB_DEBUG_OBJECTS (all one!) slab caches with a special lockdep key so that lockdep sees its a different cachep. Also add a WARN on trying to create a SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS cache, to avoid possible future trouble. Reported-and-tested-by: Sebastian Siewior <sebastian@breakpoint.cc> [ fixes to the initial patch ] Reported-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311341165.27400.58.camel@twins Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-04lockdep: Fix up warningPeter Zijlstra
On Sun, 2011-07-24 at 21:06 -0400, Arnaud Lacombe wrote: > /src/linux/linux/kernel/lockdep.c: In function 'mark_held_locks': > /src/linux/linux/kernel/lockdep.c:2471:31: warning: comparison of > distinct pointer types lacks a cast The warning is harmless in this case, but the below makes it go away. Reported-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311588599.2617.56.camel@laptop Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-04lockdep: Fix trace_hardirqs_on_caller()Peter Zijlstra
Commit dd4e5d3ac4a ("lockdep: Fix trace_[soft,hard]irqs_[on,off]() recursion") made a bit of a mess of the various checks and error conditions. In particular it moved the check for !irqs_disabled() before the spurious enable test, resulting in some warnings. Reported-by: Arnaud Lacombe <lacombar@gmail.com> Reported-by: Dave Jones <davej@redhat.com> Reported-and-tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311679697.24752.28.camel@twins Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-03Boot up with usermodehelper disabledLinus Torvalds
The core device layer sends tons of uevent notifications for each device it finds, and if the kernel has been built with a non-empty CONFIG_UEVENT_HELPER_PATH that will make us try to execute the usermode helper binary for all these events very early in the boot. Not only won't the root filesystem even be mounted at that point, we literally won't have necessarily even initialized all the process handling data structures at that point, which causes no end of silly problems even when the usermode helper doesn't actually succeed in executing. So just use our existing infrastructure to disable the usermodehelpers to make the kernel start out with them disabled. We enable them when we've at least initialized stuff a bit. Problems related to an uninitialized init_ipc_ns.ids[IPC_SHM_IDS].rw_mutex reported by various people. Reported-by: Manuel Lauss <manuel.lauss@googlemail.com> Reported-by: Richard Weinberger <richard@nod.at> Reported-by: Marc Zyngier <maz@misterjones.org> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vasiliy Kulikov <segoon@openwall.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03x86: don't include xen/xen.h in <asm/io.h> unless XEN is enabledLinus Torvalds
Dmitry Kasatkin reports: "kernel-devel package with kernel headers have no <include/xen> directory if XEN is disabled. Modules which inclide asm/io.h won't compile. XEN related content is behind the CONFIG_XEN flag in the io.h. And <xen/xen.h> should be also behind CONFIG_XEN flag." So move the include of <xen/xen.h> down into the section that is conditional on CONFIG_XEN. Reported-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03Merge branch 'for-linus' of ↵Linus Torvalds
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: ad7879 - fix deficient device disable Input: gpio_keys - fix two typos in devicetree documentation Input: mma8450 - add device tree probe support Input: gpio_keys - return proper error code if memory allocation fails Input: lm8323 - add missing device_remove_file for dev_attr_time Input: tegra-kbc - fix computation of polling time Input: kxtj9 - explicitly include module.h Input: psmouse - hgpk.c needs module.h
2011-08-03Merge branch 'idle-release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: cpuidle: stop depending on pm_idle x86 idle: move mwait_idle_with_hints() to where it is used cpuidle: replace xen access to x86 pm_idle and default_idle cpuidle: create bootparam "cpuidle.off=1" mrst_pmu: driver for Intel Moorestown Power Management Unit
2011-08-03Merge branch 'apei-release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'apei-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI, APEI, EINJ Param support is disabled by default APEI GHES: 32-bit buildfix ACPI: APEI build fix ACPI, APEI, GHES: Add hardware memory error recovery support HWPoison: add memory_failure_queue() ACPI, APEI, GHES, Error records content based throttle ACPI, APEI, GHES, printk support for recoverable error via NMI lib, Make gen_pool memory allocator lockless lib, Add lock-less NULL terminated single list Add Kconfig option ARCH_HAVE_NMI_SAFE_CMPXCHG ACPI, APEI, Add WHEA _OSC support ACPI, APEI, Add APEI bit support in generic _OSC call ACPI, APEI, GHES, Support disable GHES at boot time ACPI, APEI, GHES, Prevent GHES to be built as module ACPI, APEI, Use apei_exec_run_optional in APEI EINJ and ERST ACPI, APEI, Add apei_exec_run_optional ACPI, APEI, GHES, Do not ratelimit fatal error printk before panic ACPI, APEI, ERST, Fix erst-dbg long record reading issue ACPI, APEI, ERST, Prevent erst_dbg from loading if ERST is disabled
2011-08-04Merge branch 'linus' into core/urgentIngo Molnar
2011-08-03dmaengine: use DEFINE_IDR for static initializationAxel Lin
We could use DEFINE_IDR for statically allocated idr that allow us to save a few lines of code. And also remove unneeded mutex_init() for dma_list_mutex, as dma_list_mutex is initialized automatically by DEFINE_MUTEX(). Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-08-03ioat: fix xor_idx_to_descDan Williams
For versions of the device that implement operation-types 0x87, 0x88 (IOAT_OP_XOR, IOAT_OP_XOR_VAL) this map determines whether a given source is located in the base or extended descriptor. Source addresses 6 through 8 require an extended descriptor, hence 0xe0, not 0xd0. No shipping hardware currently implements these operation types. Reported-by: Evgueni Smogailov <evgueni.smogailov@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-08-03irda: use PCI_VENDOR_ID_*Jon Mason
Use PCI_VENDOR_ID_* from pci_ids.h instead of creating #define locally. Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-03Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: tcm_fc: Handle DDP/SW fc_frame_payload_get failures in ft_recv_write_data target: Fix bug for transport_generic_wait_for_tasks with direct operation target: iscsi_target depends on NET target: Fix WRITE_SAME_16 lba assignment breakage MAINTAINERS: Add target-devel list for drivers/target/ iscsi-target: Fix CONFIG_SMP=n and CONFIG_MODULES=n build failure iscsi-target: Fix snprintf usage with MAX_PORTAL_LEN iscsi-target: Fix uninitialized usage of cmd->pad_bytes iscsi-target: strlen() doesn't count the terminator iscsi-target: Fix NULL dereference on allocation failure
2011-08-03Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6: dt: add of_alias_scan and of_alias_get_id
2011-08-03Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: use kzalloc in ext4_kzalloc()
2011-08-03shm: optimize exit_shm()Vasiliy Kulikov
We may optimistically check .in_use == 0 without holding the rw_mutex: it's the common case, and if it's zero, there certainly won't be any segments associated with us. After taking the lock, the idr_for_each() will do the right thing, so we could now drop the re-check inside the lock without any real cost. But it won't hurt. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03shm: fix wrong testsVasiliy Kulikov
Commit 4c677e2eefdb ("shm: optimize locking and ipc_namespace getting") introduced a copy-paste bug. Due to the bug cycle optimizations were disabled. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03drm/i915: allow cache sharing policy controlJesse Barnes
Expose the SNB+ cache sharing policy register in debugfs. The new file, i915_cache_sharing, has 4 values, 0-3, with 0 being "max uncore resources" and 3 being the minimum. Exposing this control should make benchmarking easier and help us choose a good default. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-08-03drm/i915/hdmi: HDMI source product description infoframe supportJesse Barnes
Set an SPD infoframe if the sink supports it. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-08-03drm/i915/hdmi: split infoframe setting from infoframe type codeJesse Barnes
This makes it easier to add support for other infoframes (e.g. SPD, vendor specific). Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-08-03drm: track CEA version number if presentJesse Barnes
Drivers need to know the CEA version number in addition to other display info (like whether the display is an HDMI sink) before enabling certain features. So track the CEA version number in the display info structure. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Keith Packard <keithp@keithp.com>
2011-08-03tmpfs: expand "help" to explain value of TMPFS_POSIX_ACLRobert P. J. Day
Expand the fs/Kconfig "help" info to clarify why it's a bad idea to deselect the TMPFS_POSIX_ACL config variable. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-03mm: clarify the radix_tree exceptional casesHugh Dickins
Make the radix_tree exceptional cases, mostly in filemap.c, clearer. It's hard to devise a suitable snappy name that illuminates the use by shmem/tmpfs for swap, while keeping filemap/pagecache/radix_tree generality. And akpm points out that /* radix_tree_deref_retry(page) */ comments look like calls that have been commented out for unknown reason. Skirt the naming difficulty by rearranging these blocks to handle the transient radix_tree_deref_retry(page) case first; then just explain the remaining shmem/tmpfs swap case in a comment. Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>