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2015-11-19[media] media: rc: nuvoton-cir: switch resource handling to devm functionsHeiner Kallweit
Switch to managed resource handling using the devm_ functions. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] media: rc: nuvoton-cir: remove unneeded lockHeiner Kallweit
chip_major / chip_minor are accessed sequentially in probe only. Therefore no lock is needed. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] media: rc: nuvoton-cir: remove unneeded IRQ_RETVAL usageHeiner Kallweit
Using IRQ_RETVAL is unneeded here. IRQ_NONE / IRQ_HANDLED can be returned directly. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] media: rc: ir-sharp-decoder: add support for Denon variant of the ↵Heiner Kallweit
protocol Denon also uses the Sharp protocol, however with different check bits. It would have been also possible to add this as a separate protocol but this may not be worth the effort. Successfully tested with a Denon RC-1002 remote control. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] rc-core: Remove 'struct timeval' usageTina Ruchandani
streamzap uses 'struct timeval' to store the start time of a signal for gap tracking. struct timeval uses a 32-bit seconds representation which will overflow in year 2038 and beyond. Replace struct timeval with ktime_t which uses a 64-bit seconds representation and is 2038 safe. This patch uses ktime_get_real() preserving the use of wall-clock time in the original code. Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] em28xx: add Terratec Cinergy T XS (MT2060)Alberto Mardegan
The Terratec Cinergy T XS is a DVB-T receiver with no analog TV tuner. This patch adds support for the cards carrying the mt2060 tuner; it's unclear whether there are cards sold under the same name which use a different tuner. As long as there are no reports of such cards, and indeed as long as there are no working drivers for them, we assume that the USB device [0ccd:0043] is carrying the mt2060 tuner. Signed-off-by: Alberto Mardegan <mardy@users.sourceforge.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] v4l: xilinx-vipp: add missing of_node_putJulia Lawall
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] v4l: xilinx-tpg: add missing of_node_putJulia Lawall
for_each_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. A simplified version of the semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] as102: fix potential double free in as102_fw_upload()Christian Engelmayer
In case the request to locate the firmware file part 2 fails, the error path releases the already freed firmware memory location again. Thus reset the firmware pointer to NULL after releasing firmware file part 1. Signed-off-by: Christian Engelmayer <cengelma@gmx.at> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] rc: allow rc modules to be loaded if rc-main is not a moduleRussell King
rc-main mistakenly uses #ifdef MODULE to determine whether it should load the rc keymap modules. This symbol is only defined if rc-main is being built as a module itself, and bears no relation to whether the rc keymaps are modules. Fix this to use CONFIG_MODULES instead. Fixes: 631493ecacd8 ("[media] rc-core: merge rc-map.c into rc-main.c") Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] si2157: return -EINVAL if firmware blob is too bigLaura Abbott
A previous patch added a check if the firmware is too big, but it didn't set the return error code with the right value. [mchehab@osg.samsung.com: I ended by applying a v1 of Laura's patch, without the proper return code. This patch contains the difference between v2 and v1 of the Laura's "si2157: Bounds check firmware" patch] Cc: stable@kernel.org Signed-off-by: Laura Abbott <labbott@fedoraproject.org> Reviewed-by: Olli Salonen <olli.salonen@iki.fi> Tested-by: Olli Salonen <olli.salonen@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] staging: omap4iss: Compiling V4L2 framework and I2C as modules is fineSakari Ailus
Don't require V4L2 framework and I2C being linked to the kernel directly. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] include/uapi/linux/dvb/video.h: remove stdint.h includeMikko Rapeli
Kernel headers should use linux/types.h instead. Signed-off-by: Mikko Rapeli <mikko.rapeli@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] mxl111sf: missing return values validationInsu Yun
Return values of mxl111sf_enable_usb_output and mxl1x1sf_top_master_ctrl are not validated. Signed-off-by: Insu Yun <wuninsu@gmail.com> Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] rcar_vin: Remove obsolete platform data supportGeert Uytterhoeven
Since commit 3d7608e4c169af03 ("ARM: shmobile: bockw: remove legacy board file and config"), Renesas R-Car SoCs are only supported in generic DT-only ARM multi-platform builds. The driver doesn't need to use platform data anymore, hence remove platform data configuration. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] move media platform data to linux/platform_data/mediaMauro Carvalho Chehab
Now that media has its own subdirectory inside platform_data, let's move the headers that are already there to such subdir. After moving those files, the references were adjusted using this script: MAIN_DIR="linux/platform_data/" PREV_DIR="linux/platform_data/" DIRS="media/" echo "Checking affected files" >&2 for i in $DIRS; do for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do n=`basename $j` git grep -l $n done done|sort|uniq >files && ( echo "Handling files..." >&2; echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\"; ( cd include/$MAIN_DIR; for j in $DIRS; do for i in $(ls $j); do echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\"; done; done; echo "cat > a && mv a \$i; done"; ); echo "Handling documentation..." >&2; echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\"; ( cd include/$MAIN_DIR; for j in $DIRS; do for i in $(ls $j); do echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\"; done; done; echo "cat > a && mv a \$i; done" ); ) >script && . ./script Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19x86/cpu: Fix SMAP check in PVOPS environmentsAndrew Cooper
There appears to be no formal statement of what pv_irq_ops.save_fl() is supposed to return precisely. Native returns the full flags, while lguest and Xen only return the Interrupt Flag, and both have comments by the implementations stating that only the Interrupt Flag is looked at. This may have been true when initially implemented, but no longer is. To make matters worse, the Xen PVOP leaves the upper bits undefined, making the BUG_ON() undefined behaviour. Experimentally, this now trips for 32bit PV guests on Broadwell hardware. The BUG_ON() is consistent for an individual build, but not consistent for all builds. It has also been a sitting timebomb since SMAP support was introduced. Use native_save_fl() instead, which will obtain an accurate view of the AC flag. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Tested-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: <lguest@lists.ozlabs.org> Cc: Xen-devel <xen-devel@lists.xen.org> CC: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1433323874-6927-1-git-send-email-andrew.cooper3@citrix.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-11-19x86/ftrace: Add comment on static function tracingNamhyung Kim
There was a confusion between update_ftrace_function() and static function tracing trampoline regarding 3rd parameter (ftrace_ops). Add a comment for clarification. Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1447721004-2551-1-git-send-email-namhyung@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-11-19[media] V4L2: platform: rcar_jpu: switch off clock on release laterMikhail Ulyanov
Give JPU peripheral chance to finish current job. Don't switch off clock until context release. Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] V4L2: platform: rcar_jpu: remove redundant codeMikhail Ulyanov
Remove redundant code. Following code line do what we want. [mchehab@osg.samsung.com: fix conflict with VB2 split patches that renamed some structs] Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19DocBook: only copy stuff to media_api if media xml is generatedMauro Carvalho Chehab
It is possible to use: make DOCBOOKS=device-drivers.xml htmldocs To produce just a few docbooks. In such case, the media docs won't be built, causing the makefile target to return an error. While this is ok for human eyes, if the above is used on an script, it would cause troubles. Fix it by only creating/filling the media_api directory if the media_api.xml is found at DOCBOOKS. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] rc: gpio-ir-recv: add timeout on idleEric Nelson
Many decoders require a trailing space (period without IR illumination) to be delivered before completing a decode. Since the gpio-ir-recv driver only delivers events on gpio transitions, a single IR symbol (caused by a quick touch on an IR remote) will not be properly decoded without the use of a timer to flush the tail end state of the IR receiver. This patch initializes and uses a timer and the timeout field of rcdev to complete the stream and allow decode. The timeout can be overridden through the use of the LIRC_SET_REC_TIMEOUT ioctl. Signed-off-by: Eric Nelson <eric@nelint.com> Acked-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] rc-core: define a default timeout for driversEric Nelson
A default timeout value of 125 ms should work for all decoders. Declare a constant to help standardize its' use. Signed-off-by: Eric Nelson <eric@nelint.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19[media] media: st-rc: remove misuse of IRQF_NO_SUSPEND flagSudeep Holla
The device is set as wakeup capable using proper wakeup API but the driver misuses IRQF_NO_SUSPEND to set the interrupt as wakeup source which is incorrect. This patch removes the use of IRQF_NO_SUSPEND flags replacing it with enable_irq_wake instead. Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com> Cc: Maxime Coquelin <maxime.coquelin@st.com> Cc: Patrice Chotard <patrice.chotard@st.com> Cc: linux-arm-kernel@lists.infradead.org Cc: kernel@stlinux.com Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-19Revert "drm/i915: skip modeset if compatible for everyone."Jani Nikula
This reverts commit 6764e9f8724f1231b4deac53b9a82286ac0830e7 Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Date: Thu Aug 27 15:44:06 2015 +0200 drm/i915: skip modeset if compatible for everyone. Bring back the i915.fastboot module parameter, disabled by default, due to backlight regression on Chromebook Pixel 2015. Apparently the firmware of the Chromebook in question enables the panel but disables backlight to avoid a brief garbage scanout upon loading the kernel/module. With fastboot, we leave the backlight untouched, in this case disabled. The user would have to do a modeset (i.e. not just crank up the brightness) to enable the backlight. There is no clean fix readily available, so get back to the drawing board by reverting. [N.B. The reference below is for when the thread was included on public lists, and some of the context had already been dropped by then.] Reported-and-tested-by: Olof Johansson <olof@lixom.net> Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> References: http://marc.info/?i=CAKMK7uES7xk05ki92oeX6gmvZWAh9f2vL7yz=6T+fGK9J3X7cQ@mail.gmail.com Fixes: 6764e9f8724f ("drm/i915: skip modeset if compatible for everyone.") Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1447921590-3785-1-git-send-email-jani.nikula@intel.com
2015-11-19drm/mgag200: fix kernel hang in cursor code.Wang, Rui Y
The machine hang completely with the following message on the console: [ 487.777538] BUG: unable to handle kernel NULL pointer dereference at 0000000000000060 [ 487.777554] IP: [<ffffffff8158aaee>] _raw_spin_lock+0xe/0x30 [ 487.777557] PGD 42e9f7067 PUD 42f2fa067 PMD 0 [ 487.777560] Oops: 0002 [#1] SMP ... [ 487.777618] CPU: 21 PID: 3190 Comm: Xorg Tainted: G E 4.4.0-rc1-3-default+ #6 [ 487.777620] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BRHSXSD1.86B.0059.R00.1501081238 01/08/2015 [ 487.777621] task: ffff880853ae4680 ti: ffff8808696d4000 task.ti: ffff8808696d4000 [ 487.777625] RIP: 0010:[<ffffffff8158aaee>] [<ffffffff8158aaee>] _raw_spin_lock+0xe/0x30 [ 487.777627] RSP: 0018:ffff8808696d79c0 EFLAGS: 00010246 [ 487.777628] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 487.777629] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000060 [ 487.777630] RBP: ffff8808696d79e0 R08: 0000000000000000 R09: ffff88086924a780 [ 487.777631] R10: 000000000001bb40 R11: 0000000000003246 R12: 0000000000000000 [ 487.777632] R13: ffff880463a27360 R14: ffff88046ca50218 R15: 0000000000000080 [ 487.777634] FS: 00007f3f81c5a8c0(0000) GS:ffff88086f060000(0000) knlGS:0000000000000000 [ 487.777635] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 487.777636] CR2: 0000000000000060 CR3: 000000042e678000 CR4: 00000000001406e0 [ 487.777638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 487.777639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 487.777639] Stack: [ 487.777642] ffffffffa00eb5fa ffff8808696d7b60 ffff88086b87d800 0000000000000000 [ 487.777644] ffff8808696d7ac8 ffffffffa01694b6 ffff8808696d7ae8 ffffffff8109c8d5 [ 487.777647] ffff880469158740 ffff880463a27000 ffff88086b87d800 ffff88086b87d800 [ 487.777647] Call Trace: [ 487.777674] [<ffffffffa00eb5fa>] ? drm_gem_object_lookup+0x1a/0xa0 [drm] [ 487.777681] [<ffffffffa01694b6>] mga_crtc_cursor_set+0xc6/0xb60 [mgag200] [ 487.777691] [<ffffffff8109c8d5>] ? find_busiest_group+0x35/0x4a0 [ 487.777696] [<ffffffff81086294>] ? __might_sleep+0x44/0x80 [ 487.777699] [<ffffffff815888c2>] ? __ww_mutex_lock+0x22/0x9c [ 487.777722] [<ffffffffa0104f64>] ? drm_modeset_lock+0x34/0xf0 [drm] [ 487.777733] [<ffffffffa0148d9e>] restore_fbdev_mode+0xee/0x2a0 [drm_kms_helper] [ 487.777742] [<ffffffffa014afce>] drm_fb_helper_restore_fbdev_mode_unlocked+0x2e/0x70 [drm_kms_helper] [ 487.777748] [<ffffffffa014b037>] drm_fb_helper_set_par+0x27/0x50 [drm_kms_helper] [ 487.777752] [<ffffffff8134560c>] fb_set_var+0x18c/0x3f0 [ 487.777777] [<ffffffffa02a9b0a>] ? __ext4_handle_dirty_metadata+0x8a/0x210 [ext4] [ 487.777783] [<ffffffff8133cb97>] fbcon_blank+0x1b7/0x2b0 [ 487.777790] [<ffffffff813be2a3>] do_unblank_screen+0xb3/0x1c0 [ 487.777795] [<ffffffff813b5aba>] vt_ioctl+0x118a/0x1210 [ 487.777801] [<ffffffff813a8fe0>] tty_ioctl+0x3f0/0xc90 [ 487.777808] [<ffffffff81172018>] ? kzfree+0x28/0x30 [ 487.777813] [<ffffffff811e053f>] ? mntput+0x1f/0x30 [ 487.777817] [<ffffffff811d3f5d>] do_vfs_ioctl+0x30d/0x570 [ 487.777822] [<ffffffff8107ed3a>] ? task_work_run+0x8a/0xa0 [ 487.777825] [<ffffffff811d4234>] SyS_ioctl+0x74/0x80 [ 487.777829] [<ffffffff8158aeae>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 487.777851] Code: 65 ff 0d ce 02 a8 7e 5d c3 ba 01 00 00 00 f0 0f b1 17 85 c0 75 e8 b0 01 5d c3 0f 1f 00 65 ff 05 b1 02 a8 7e 31 c0 ba 01 00 00 00 <f0> 0f b1 17 85 c0 75 01 c3 55 89 c6 48 89 e5 e8 4e f5 b1 ff 5d [ 487.777854] RIP [<ffffffff8158aaee>] _raw_spin_lock+0xe/0x30 [ 487.777855] RSP <ffff8808696d79c0> [ 487.777856] CR2: 0000000000000060 [ 487.777860] ---[ end trace 672a2cd555e0ebd3 ]--- The cursor code may be entered with file_priv == NULL && handle == NULL. The problem was introduced by: "bf89209 drm/mga200g: Hold a proper reference for cursor_set" which calls drm_gem_object_lookup(dev, file_priv...). Previously this wasn't a problem because we checked the handle. Move the check early in the function can fix the problem. Signed-off-by: Rui Wang <rui.y.wang@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-11-19Merge branch 'drm-vc4-fixes' of git://github.com/anholt/linux into drm-fixesDave Airlie
Here are a few little VC4 fixes for 4.4 that I didn't get in to you before the -next pull request. I dropped the feature-ish one I'd mentioned, and also droppped the one I saw you included in the last -fixes pull request. * 'drm-vc4-fixes' of git://github.com/anholt/linux: drm/vc4: Make sure that planes aren't scaled. drm/vc4: Fix some failure to track __iomem decorations on pointers. drm/vc4: checking for NULL instead of IS_ERR drm/vc4: fix itnull.cocci warnings drm/vc4: fix platform_no_drv_owner.cocci warnings drm/vc4: vc4_plane_duplicate_state() can be static
2015-11-19Merge branch 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes Radeon and amdgpu fixes for 4.4. A bit more the usual since I missed last week. Misc fixes all over the place. The big changes are the tiling configuration fixes for Fiji. * 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux: (35 commits) drm/amdgpu: reserve/unreserve objects out of map/unmap operations drm/amdgpu: move bo_reserve out of amdgpu_vm_clear_bo drm/amdgpu: add lock for interval tree in vm drm/amdgpu: keep the owner for VMIDs drm/amdgpu: move VM manager clean into the VM code again drm/amdgpu: cleanup VM coding style drm/amdgpu: remove unused VM manager field drm/amdgpu: cleanup scheduler command submission drm/amdgpu: fix typo in firmware name drm/amdgpu: remove the unnecessary parameter adev for amdgpu_sa_bo_new() drm/amdgpu: wait interruptible when semaphores are disabled v2 drm/amdgpu: update pd while updating vm as well drm/amdgpu: fix handling order in scheduler CS drm/amdgpu: fix incorrect mutex usage v3 drm/amdgpu: cleanup scheduler fence get/put dance drm/amdgpu: add command submission workflow tracepoint drm/amdgpu: update Fiji's tiling mode table drm/amdgpu: fix bug that can't enter thermal interrupt for bonaire. drm/amdgpu: fix seq_printf format string drm/radeon: fix quirk for MSI R7 370 Armor 2X ...
2015-11-18mm, dax: fix DAX deadlocks (COW fault)Yigal Korman
DAX handling of COW faults has wrong locking sequence: dax_fault does i_mmap_lock_read do_cow_fault does i_mmap_unlock_write Ross's commit[1] missed a fix[2] that Kirill added to Matthew's commit[3]. Original COW locking logic was introduced by Matthew here[4]. This should be applied to v4.3 as well. [1] 0f90cc6609c7 mm, dax: fix DAX deadlocks [2] 52a2b53ffde6 mm, dax: use i_mmap_unlock_write() in do_cow_fault() [3] 843172978bb9 dax: fix race between simultaneous faults [4] 2e4cdab0584f mm: allow page fault handlers to perform the COW Cc: <stable@vger.kernel.org> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Acked-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Yigal Korman <yigal@plexistor.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-11-19Revert "Documentation: kernel_parameters for Intel P state driver"Rafael J. Wysocki
Revert commit 053f56def57b (Documentation: kernel_parameters for Intel P state driver) as the code documented by it has been reverted already. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-19cpufreq: mediatek: fix build errorArnd Bergmann
The recently added mt8173 cpufreq driver relies on the cpu topology that is always present on ARM64 but optional on ARM32: drivers/cpufreq/mt8173-cpufreq.c: In function 'mtk_cpufreq_init': drivers/cpufreq/mt8173-cpufreq.c:441:30: error: 'cpu_topology' undeclared (first use in this function) cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling); This refines the Kconfig dependencies so that we can still build on ARM32, but only if COMPILE_TEST is selected and the CPU topology code is present. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-19cpufreq: intel_pstate: Add separate support for Airmont coresPhilippe Longepe
There are two flavors of Atom cores to be supported by intel_pstate, Silvermont and Airmont, so make the driver distinguish between them by adding separate frequency tables. Separate the CPU defaults params for each of them and match the CPU IDs against them as appropriate. Signed-off-by: Philippe Longepe <philippe.longepe@linux.intel.com> Signed-off-by: Stephane Gasparini <stephane.gasparini@linux.intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [ rjw: Subject and changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-19cpufreq: intel_pstate: Replace BYT with ATOMPhilippe Longepe
Rename symbol and function names starting with "BYT" or "byt" to start with "ATOM" or "atom", respectively, so as to make it clear that they may apply to Atom in general and not just to Baytrail (the goal is to support several Atoms architectures eventually). This should not lead to any functional changes. Signed-off-by: Philippe Longepe <philippe.longepe@linux.intel.com> Signed-off-by: Stephane Gasparini <stephane.gasparini@linux.intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [ rjw : Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-19Revert "cpufreq: intel_pstate: Use ACPI perf configuration"Rafael J. Wysocki
Revert commit 37afb0003242 (cpufreq: intel_pstate: Use ACPI perf configuration) that is reported to cause a regression to happen on a system where invalid data are returned by the ACPI _PSS object. Since that commit makes assumptions regarding the _PSS output correctness that may turn out to be overly optimistic in general, there is a concern that it may introduce regression on more systems, so it's better to revert it now and we'll revisit the underlying issue in the next cycle with a more robust solution. Conflicts: drivers/cpufreq/intel_pstate.c Fixes: 37afb0003242 (cpufreq: intel_pstate: Use ACPI perf configuration) Reported-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-18Revert "cpufreq: intel_pstate: Avoid calculation for max/min"Rafael J. Wysocki
Revert commit 4ef451487019 (cpufreq: intel_pstate: Avoid calculation for max/min) as it depends on commit 37afb0003242 (cpufreq: intel_pstate: Use ACPI perf configuration) that causes problems to happen and needs to be reverted. Conflicts: drivers/cpufreq/intel_pstate.c Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-18Revert "Staging: wilc1000: coreconfigurator: Drop unneeded wrapper functions"Glen Lee
The source and destination pointers are misplaced. This will be like, ether_addr_copy(data, bssid + ADDR2); -> ether_addr_copy(bssid, data + ADDR2); and also to use ether_addr_copy, it has to be proved that src/dst address are properly aligned(2). I revert this as author agree to drop this patch. This reverts commit d4622f68db8095dd54179e3134e97812727f6b89. Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-18MAINTAINERS: brcmnand: Add co-maintainer for Broadcom SoCsKamal Dasu
Adding myself as co-maintainer of nand controller driver for the Broadcom SoCs. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-11-18Merge tag 'iio-fixes-for-4.4a' of ↵Greg Kroah-Hartman
ssh://ra.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus Jonathan writes: First set of IIO fixes for the 4.4 cycle. This set does not include those for issues introduced during the merge window. Fixes of those will follow in a future series. * ad5064 - Make sure the local i2c_write returns 0 on success rather than the number of bytes transfered. Otherwise we report an error on all writes. - Fix a shift for ad5629 and ad5669 which gives incorrect DAC output on these parts. * ad7793 - The product ID on the datasheet is wrong. Fix it in the driver. * IIO_DUMMY_EVGEN - select IRQ_WORK as a dependency. * lpc32xx - make sure clock is prepared before enabling. * si7020 - data byte order was reversed. Fix it. * vf610 - Internal temperature calculation was wrong if a different reference voltage was used. Now use a linear interpolation function to make it work over the full range. - Fix a division by zero in the case of a device tree property not being present (same issue two fixes). * xilinx XADC - VREFN scale was wrong - fix it.
2015-11-18[media] s5c73m3-spi: fix compilation breakage when compiled as ModuleMauro Carvalho Chehab
commit f934a94bb566a629b7e0be52d087a686145d1f14 ('s5c73m3: Export OF module alias information') broke compilation when compiled as module: In file included from drivers/media/i2c/s5c73m3/s5c73m3-spi.c:22:0: drivers/media/i2c/s5c73m3/s5c73m3-spi.c:40:40: error: expected ')' before ';' token MODULE_DEVICE_TABLE(of, s5c73m3_spi_ids;); ^ Fix it by removing the extra ';' Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-11-18arm64: barriers: fix smp_load_acquire to work with const argumentsWill Deacon
A newly introduced function in include/net/sock.h passes a const argument to smp_load_acquire: static inline int sk_state_load(const struct sock *sk) { return smp_load_acquire(&sk->sk_state); } This cause an allmodconfig build failure, since our underlying load-acquire implementation does not handle const types correctly: include/net/sock.h: In function 'sk_state_load': ./arch/arm64/include/asm/barrier.h:71:3: error: read-only variable '___p1' used as 'asm' output asm volatile ("ldarb %w0, %1" \ This patch fixes the problem by reusing the trick in READ_ONCE that loads via a non-const member of an anonymous union. This has the advantage of allowing us to use smp_load_acquire on packed structures (e.g. arch_spinlock_t) as well as primitive types. Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Daney <david.daney@cavium.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Reported-by: Arnd Bergmann <arnd@arndb.de> Reported-by: David Daney <david.daney@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-11-18xhci: Fix a race in usb2 LPM resume, blocking U3 for usb2 devicesMathias Nyman
Clear device initiated resume variables once device is fully up and running in U0 state. Resume needs to be signaled for 20ms for usb2 devices before they can be moved to U0 state. An interrupt is triggered if a device initiates resume. As we handle the event in interrupt context we can not sleep for 20ms, so we instead set a resume flag, a timestamp, and start the roothub polling. The roothub code will later move the port to U0 when it finds a port in resume state with the resume flag set, and timestamp passed by 20ms. A host initiated resume is however not done in interrupt context, and host initiated resume code will directly signal resume, wait 20ms and then move the port to U0. These two codepaths can race, if we are in the middle of a host initated resume, while sleeping for 20ms, we may handle a port event and find the port in resume state. The port event handling code will assume the resume was device initiated and set the resume flag and timestamp. Root hub code will however not catch the port in resume state again as the host initated resume code has already moved the port to U0. The resume flag and timestamp will remain set for this port preventing port from suspending again (LPM setting port to U3) Fix this for now by always clearing the device initated resume parameters once port is in U0 Cc: stable <stable@vger.kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-18usb: xhci: fix checking ep busy for CFCLu Baolu
Function ep_ring_is_processing() checks the dequeue pointer in endpoint context to know whether an endpoint is busy with processing TRBs. This is not correct since dequeue pointer field in an endpoint context is only valid when the endpoint is in Halted or Stopped states. This buggy code causes audio noise when playing sound with USB headset connected to host controllers which support CFC (one of xhci 1.1 features). This patch should exist in stable kernel since v4.3. Reported-and-tested-by: YD Tseng <yd_tseng@asmedia.com.tw> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Cc: stable <stable@vger.kernel.org> # v4.3 Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-18xhci: Workaround to get Intel xHCI reset working more reliablyRajmohan Mani
Existing Intel xHCI controllers require a delay of 1 mS, after setting the CMD_RESET bit in command register, before accessing any HC registers. This allows the HC to complete the reset operation and be ready for HC register access. Without this delay, the subsequent HC register access, may result in a system hang, very rarely. Verified CherryView / Braswell platforms go through over 5000 warm reboot cycles (which was not possible without this patch), without any xHCI reset hang. Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com> Tested-by: Joe Lawrence <joe.lawrence@stratus.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-18Merge tag 'usb-ci-v4.4-rc2' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-linus Peter writes: USB Chipidea Fixes for v4.4-rc2 The first four fixes was for v4.3-rc7, but it is too late at that time, and other two small fixes are for possible NULL pointer issue.
2015-11-18Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Assorted bug fixes, the mlock2 system call gets added, and one improvement. The boot from dasd devices is now possible from a wider range of devices" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: remove SALIPL loader s390: wire up mlock2 system call s390: remove g5 elf platform support s390: avoid cache aliasing under z/VM and KVM s390/sclp: _sclp_wait_int(): retain full PSW mask s390/zcrypt: Fix initialisation when zcrypt is built-in s390/zcrypt: Fix kernel crash on systems without AP bus support s390: add support for ipl devices in subchannel sets > 0 s390/ipl: fix out of bounds access in scpdata_write s390/pci_dma: improve debugging of errors during dma map s390/pci_dma: handle dma table failures s390/pci_dma: unify label of invalid translation table entries s390/syscalls: remove system call number calculation s390/cio: simplify css_generate_pgid s390/diag: add a s390 prefix to the diagnose trace point s390/head: fix error message on unsupported hardware
2015-11-18Merge tag 'hwmon-for-linus-v4.4-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Fix build issues in scpi and ina2xx drivers, update scpi driver to support recent firmware, and fix an uninitialized variable warning in applesmc driver" * tag 'hwmon-for-linus-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (scpi) skip unsupported sensors properly hwmon: (scpi) add thermal-of dependency hwmon : (applesmc) Fix uninitialized variables warnings hwmon: (ina2xx) Fix build issue by selecting REGMAP_I2C
2015-11-18drm/amdgpu: reserve/unreserve objects out of map/unmap operationsChunming Zhou
Change-Id: Id6514f2fb6e002437fdbe99353d5d35f4ac736c7 Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2015-11-18drm/amdgpu: move bo_reserve out of amdgpu_vm_clear_boChunming Zhou
Change-Id: Ifbb0c06680494bfa04d0be5e5941d31ae2e5ef28 Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2015-11-18drm/amdgpu: add lock for interval tree in vmChunming Zhou
Change-Id: I62b892a22af37b32e6b4aefca80a25cf45426ed2 Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2015-11-18drm/amdgpu: keep the owner for VMIDsChristian König
We don't need the last VM use any more, keep the owner directly. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <davdi1.zhou@amd.com>