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cf632bd6c6
linux/drivers/gpu/drm
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Chris Wilson cf632bd6c6 drm/i915: Extend rpm wakelock for debugfs/i915_drpc_info 
i915_drpc_info missed covering a few register read with the runtime pm
wakelock. Be simple and cover the entire function with a single wakelock
so that new additions are not similarly missed in future.

  WARNING: CPU: 2 PID: 1334 at drivers/gpu/drm/i915/intel_drv.h:1743 gen6_read32+0x192/0x1e0 [i915]
  RPM wakelock ref not held during HW access
  Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver netconsole nfsd auth_rpcgss ipmi_watchdog ipmi_poweroff ipmi_devintf ipmi_msghandler overlay btrfs xor raid6_pq dm_mod sg sd_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ata_generic pata_acpi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel kvm_intel snd_hda_codec kvm eeepc_wmi irqbypass snd_hda_core crct10dif_pclmul crc32_pclmul crc32c_intel asus_wmi sparse_keymap ghash_clmulni_intel snd_hwdep i915 rfkill ppdev pcbc aesni_intel ata_piix crypto_simd glue_helper snd_pcm pata_via cryptd pcspkr snd_timer drm_kms_helper syscopyarea snd sysfillrect libata sysimgblt fb_sys_fops soundcore shpchp drm wmi parport_pc parport tpm_infineon video
  CPU: 2 PID: 1334 Comm: php5 Not tainted 4.10.0-rc8-01615-g1f58c8e #1
  Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 1002 04/01/2011
  Call Trace:
   dump_stack+0x63/0x8a
   __warn+0xcb/0xf0
   warn_slowpath_fmt+0x4f/0x60
   ? seq_vprintf+0x35/0x50
   gen6_read32+0x192/0x1e0 [i915]
   i915_drpc_info+0x55d/0x990 [i915]
   seq_read+0xf2/0x3b0
   full_proxy_read+0x51/0x80
   __vfs_read+0x28/0x130
   ? security_file_permission+0x9b/0xc0
   ? rw_verify_area+0x4e/0xb0
   vfs_read+0xa8/0x170
   SyS_read+0x46/0xa0
   entry_SYSCALL_64_fastpath+0x1a/0xa9
  RIP: 0033:0x7fd97bf175a0
  RSP: 002b:00007ffdf730db68 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
  RAX: ffffffffffffffda RBX: 00007fd978028738 RCX: 00007fd97bf175a0
  RDX: 0000000000002000 RSI: 00007fd97740e0d8 RDI: 0000000000000005
  RBP: 0000000000000001 R08: 0000000000e97840 R09: 00007fd977ef8d58
  R10: 0000000000000027 R11: 0000000000000246 R12: 00007fd977ef8d58
  R13: 0000000000000000 R14: 0000000000eb4640 R15: 0000000000000000

Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170313095617.29010-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
2017-03-13 14:25:03 +00:00
..
amd Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
arc drm: remove drm_vblank_no_hw_counter assignment from driver code 2017-02-07 21:43:55 +01:00
arm drm: Constify drm_mode_config atomic helper private pointer 2017-02-12 12:05:23 +01:00
armada Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
ast Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
atmel-hlcdc drm/atmel-hlcdc: Simplify the HLCDC layer logic 2017-02-28 11:57:56 +01:00
bochs drm/fb-helper: Automatically clean up fb_info 2017-02-07 21:36:28 +01:00
bridge drm/bridge/sii8620: add missing error handling in probe 2017-02-23 11:06:11 -05:00
cirrus drm/fb-helper: Automatically clean up fb_info 2017-02-07 21:36:28 +01:00
etnaviv sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
exynos Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
fsl-dcu Merge airlied/drm-next into drm-misc-next 2017-02-26 21:34:42 +01:00
gma500 Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
hisilicon drm: kirin: use vblank hooks in struct drm_crtc_funcs 2017-02-21 11:17:45 -05:00
i2c
i810 drm/i810: drop device_is_agp callback 2017-01-26 10:44:43 +01:00
i915 drm/i915: Extend rpm wakelock for debugfs/i915_drpc_info 2017-03-13 14:25:03 +00:00
imx Merge airlied/drm-next into drm-misc-next 2017-02-26 21:34:42 +01:00
lib
mediatek drm: mediatek: use vblank hooks in struct drm_crtc_funcs 2017-02-21 11:17:54 -05:00
meson drm: meson: use vblank hooks in struct drm_crtc_funcs 2017-02-09 16:08:09 +08:00
mga lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
mgag200 gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level> 2017-03-01 09:44:11 +01:00
msm Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
mxsfb drm: remove drm_vblank_no_hw_counter assignment from driver code 2017-02-07 21:43:55 +01:00
nouveau Merge branch 'linux-4.12' of git://github.com/skeggsb/linux into drm-next 2017-03-08 12:54:58 +10:00
omapdrm Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
panel drm/panel: simple: Specify bus width and flags for EDT displays 2017-01-26 10:57:18 +01:00
qxl Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
r128 gpu: drm: drivers: Convert printk(KERN_<LEVEL> to pr_<level> 2017-03-01 09:44:11 +01:00
radeon Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
rcar-du drm: rcar-du: use vblank hooks in struct drm_crtc_funcs 2017-02-09 16:08:44 +08:00
rockchip Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
savage
selftests drm: kselftest: fix spelling mistake: "misalinged" -> "misaligned" 2017-02-26 22:54:47 +01:00
shmobile drm: shmobile: use vblank hooks in struct drm_crtc_funcs 2017-02-09 16:10:16 +08:00
sis drm: Improve drm_mm search (and fix topdown allocation) with rbtrees 2017-02-03 11:10:32 +01:00
sti drm: sti: make driver use devm_of_platform_populate() 2017-02-27 17:20:29 +01:00
sun4i drm: sun4i: use vblank hooks in struct drm_crtc_funcs 2017-02-09 16:10:52 +08:00
tdfx
tegra Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
tilcdc drm: tilcdc: use vblank hooks in struct drm_crtc_funcs 2017-02-09 16:12:01 +08:00
tinydrm Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
ttm Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
udl Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
vc4 Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
vgem Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-02 15:20:00 -08:00
via drm/via: use get_user_pages_unlocked() 2017-02-28 10:00:50 +01:00
virtio Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
vmwgfx Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
zte Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
ati_pcigart.c
drm_agpsupport.c drm/i810: drop device_is_agp callback 2017-01-26 10:44:43 +01:00
drm_atomic_helper.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_atomic.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_auth.c drm/core: Use recommened kerneldoc for struct member refs 2017-01-25 16:22:42 +01:00
drm_blend.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_bridge.c
drm_bufs.c
drm_cache.c gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level> 2017-02-28 14:32:19 +01:00
drm_color_mgmt.c drm/color: un-inline drm_color_lut_extract() 2017-01-31 15:31:58 +02:00
drm_connector.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_crtc_internal.h drm: Rename drm_mode_object_get() 2017-02-28 16:14:53 +01:00
drm_crtc.c drm: Introduce drm_framebuffer_{get,put}() 2017-02-28 16:15:03 +01:00
drm_debugfs_crc.c
drm_debugfs.c drm: add drm_get_connector_force_name 2017-02-28 12:17:08 +02:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c drm: Add name for DRM_DP_DUAL_MODE_LSPCON 2017-02-23 11:06:12 -05:00
drm_dp_helper.c drm/kms-helpers: Use recommened kerneldoc for struct member refs 2017-01-25 16:18:57 +01:00
drm_dp_mst_topology.c Less anger inducing pull request for 4.11 2017-02-23 18:58:18 -08:00
drm_drv.c Linux 4.10-rc8 2017-02-23 12:10:12 +10:00
drm_dumb_buffers.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_edid_load.c drm: move edid property update and add modes out of edid firmware loader 2017-02-21 15:41:24 +02:00
drm_edid.c gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level> 2017-02-28 14:32:19 +01:00
drm_encoder_slave.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_encoder.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_fb_cma_helper.c drm: Update drm_fbdev_cma_init documentation 2017-03-01 23:52:35 +01:00
drm_fb_helper.c drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC 2017-03-02 08:12:15 +01:00
drm_flip_work.c
drm_fops.c drm/core: Use recommened kerneldoc for struct member refs 2017-01-25 16:22:42 +01:00
drm_fourcc.c
drm_framebuffer.c drm: Introduce drm_framebuffer_{get,put}() 2017-02-28 16:15:03 +01:00
drm_gem_cma_helper.c Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
drm_gem.c drm: Introduce drm_gem_object_{get,put}() 2017-02-28 16:16:43 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h drm: remove device_is_agp callback 2017-01-26 10:45:14 +01:00
drm_ioc32.c gpu: drm: core: Convert printk(KERN_<LEVEL> to pr_<level> 2017-02-28 14:32:19 +01:00
drm_ioctl.c
drm_irq.c drm: unexport function drm_vblank_no_hw_counter() 2017-02-07 21:45:02 +01:00
drm_kms_helper_common.c
drm_legacy.h
drm_lock.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
drm_memory.c
drm_mipi_dsi.c
drm_mm.c drm: Micro-optimise drm_mm_for_each_node_in_range() 2017-02-06 16:57:37 +01:00
drm_mode_config.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_mode_object.c Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
drm_modes.c drm: Rename drm_mode_object_get() 2017-02-28 16:14:53 +01:00
drm_modeset_helper.c
drm_modeset_lock.c drm/kms-core: Use recommened kerneldoc for struct member refs 2017-01-25 16:30:34 +01:00
drm_of.c
drm_panel.c
drm_pci.c drm: remove device_is_agp callback 2017-01-26 10:45:14 +01:00
drm_plane_helper.c drm: Rename connector list iterator API 2017-02-28 16:16:48 +01:00
drm_plane.c drm: Introduce drm_framebuffer_{get,put}() 2017-02-28 16:15:03 +01:00
drm_platform.c drm/core: Use recommened kerneldoc for struct member refs 2017-01-25 16:22:42 +01:00
drm_prime.c drm: Introduce drm_gem_object_{get,put}() 2017-02-28 16:16:43 +01:00
drm_print.c drm: drm_printer: add __printf validation 2017-02-26 21:43:08 +01:00
drm_probe_helper.c Merge tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-03-07 13:59:53 +10:00
drm_property.c drm: Introduce drm_property_blob_{get,put}() 2017-02-28 16:16:46 +01:00
drm_rect.c
drm_scatter.c
drm_simple_kms_helper.c
drm_sysfs.c drm/core: Use recommened kerneldoc for struct member refs 2017-01-25 16:22:42 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c drm: remove unnecessary fault wrappers 2017-02-24 17:46:55 -08:00
drm_vma_manager.c drm: Improve drm_mm search (and fix topdown allocation) with rbtrees 2017-02-03 11:10:32 +01:00
Kconfig drm/fb-helper: Add multi buffer support for cma fbdev 2017-02-26 22:11:37 +01:00
Makefile drm: Add DRM support for tiny LCD displays 2017-02-18 18:04:58 +01:00