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Maarten Lankhorst 033b7a230c drm/i915: Handle pipe CRC around enabling/disabling pipe. 
This will get rid of the following error:
[   74.730271] WARNING: CPU: 4 PID: 0 at drivers/gpu/drm/drm_vblank.c:614 drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
[   74.730311] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel crct10dif_pclmul snd_hda_codec crc32_pclmul snd_hwdep broadcom ghash_clmulni_intel snd_hda_core bcm_phy_lib snd_pcm tg3 lpc_ich mei_me mei prime_numbers
[   74.730353] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G     U           4.16.0-rc2-CI-CI_DRM_3822+ #1
[   74.730355] Hardware name: Dell Inc. XPS 8300  /0Y2MRG, BIOS A06 10/17/2011
[   74.730359] RIP: 0010:drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
[   74.730361] RSP: 0018:ffff88022fb03d10 EFLAGS: 00010086
[   74.730365] RAX: ffffffffa0291d20 RBX: ffff88021a180000 RCX: 0000000000000001
[   74.730367] RDX: ffffffff820e7db8 RSI: 0000000000000001 RDI: ffffffff82068cea
[   74.730369] RBP: ffff88022fb03d70 R08: 0000000000000000 R09: ffffffff815d26d0
[   74.730371] R10: 0000000000000000 R11: ffffffffa0161ca0 R12: 0000000000000001
[   74.730373] R13: ffff880212448008 R14: ffff880212448330 R15: 0000000000000000
[   74.730376] FS:  0000000000000000(0000) GS:ffff88022fb00000(0000) knlGS:0000000000000000
[   74.730378] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.730380] CR2: 000055edcbec9000 CR3: 0000000002210001 CR4: 00000000000606e0
[   74.730382] Call Trace:
[   74.730385]  <IRQ>
[   74.730397]  drm_get_last_vbltimestamp+0x36/0x50
[   74.730401]  drm_update_vblank_count+0x64/0x240
[   74.730409]  drm_crtc_accurate_vblank_count+0x41/0x90
[   74.730453]  display_pipe_crc_irq_handler+0x176/0x220 [i915]
[   74.730497]  i9xx_pipe_crc_irq_handler+0xfe/0x150 [i915]
[   74.730537]  ironlake_irq_handler+0x618/0xa30 [i915]
[   74.730548]  __handle_irq_event_percpu+0x3c/0x340
[   74.730556]  handle_irq_event_percpu+0x1b/0x50
[   74.730561]  handle_irq_event+0x2f/0x50
[   74.730566]  handle_edge_irq+0xe4/0x1b0
[   74.730572]  handle_irq+0x11/0x20
[   74.730576]  do_IRQ+0x5e/0x120
[   74.730584]  common_interrupt+0x84/0x84
[   74.730586]  </IRQ>
[   74.730591] RIP: 0010:cpuidle_enter_state+0xaa/0x350
[   74.730593] RSP: 0018:ffffc9000008beb8 EFLAGS: 00000212 ORIG_RAX: ffffffffffffffde
[   74.730597] RAX: ffff880226b80040 RBX: 000000000031fc3e RCX: 0000000000000001
[   74.730599] RDX: 0000000000000000 RSI: ffffffff8210fb59 RDI: ffffffff820c02e7
[   74.730601] RBP: 0000000000000004 R08: 00000000000040af R09: 0000000000000018
[   74.730603] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
[   74.730606] R13: ffffe8ffffd00430 R14: 0000001166120bf4 R15: ffffffff82294460
[   74.730621]  ? cpuidle_enter_state+0xa6/0x350
[   74.730629]  do_idle+0x188/0x1d0
[   74.730636]  cpu_startup_entry+0x14/0x20
[   74.730641]  start_secondary+0x129/0x160
[   74.730646]  secondary_startup_64+0xa5/0xb0
[   74.730660] Code: e1 48 c7 c2 b8 7d 0e 82 be 01 00 00 00 48 c7 c7 ea 8c 06 82 e8 64 ec ff ff 48 8b 83 c8 07 00 00 48 83 78 28 00 0f 84 e2 fe ff ff <0f> 0b 45 31 ed e9 db fe ff ff 41 b8 d3 4d 62 10 89 c8 6a 03 41
[   74.730754] ---[ end trace 14b1345705b68565 ]---

Changes since v1:
- Don't try to apply CRC workaround when enabling pipe, it should already be enabled.
Changes since v2:
- Make crc functions for !DEBUGFS case inline.
- Pass intel_crtc to crc functions.
- Add comments to callsites.
Changes since v3:
- Cache selected source to pipe_crc->source.
- Set pipe_crc->skipped to MIN_INT during disable to close a race condition.
Changes since v4:
- Handle fallout from setting pipe_crc->source in irq handler.

Cc: Marta Löfstedt <marta.lofstedt@intel.com>
Reported-by: Marta Löfstedt <marta.lofstedt@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105185
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180308120202.52446-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2018-03-08 19:09:21 +01:00
..
amd Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2018-03-01 14:07:22 +10:00
arc drm/arcpgu: remove drm_encoder_slave 2018-01-30 18:05:25 +01:00
arm drm/arm/mali-dp: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:36 +02:00
armada Merge branch 'drm-armada-devel-4.15' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-next 2018-01-05 09:51:43 +10:00
ast drm/ast: Load lut in crtc_commit 2018-02-01 11:35:46 +10:00
atmel-hlcdc drm/atmel-hlcdc: Use the alpha format field in drm_format_info 2018-01-29 12:08:37 +01:00
bochs drm/bochs: make structure bochs_bo_driver static 2018-02-19 10:43:44 +01:00
bridge drm/bridge/synopsys: dw-hdmi: don't clobber drvdata 2018-02-16 09:33:07 +01:00
cirrus drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
etnaviv drm/etnaviv: use memset32 to init pagetable 2018-01-02 17:36:53 +01:00
exynos drm/atmel-exynos: Use the alpha format field in drm_format_info 2018-01-29 12:08:42 +01:00
fsl-dcu drm/fsl-dcu: Use drm_mode_config_helper_suspend/resume() 2017-12-05 13:46:41 +01:00
gma500 pci-v4.16-changes 2018-02-06 09:59:40 -08:00
hisilicon drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
i2c drm/i2c: tda998x: Remove duplicate NULL check 2018-01-18 16:24:38 +02:00
i810
i915 drm/i915: Handle pipe CRC around enabling/disabling pipe. 2018-03-08 19:09:21 +01:00
imx drm/bridge/synopsys: dw-hdmi: don't clobber drvdata 2018-02-16 09:33:07 +01:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mediatek drm/mediatek: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:45 +02:00
meson drm/bridge/synopsys: dw-hdmi: don't clobber drvdata 2018-02-16 09:33:07 +01:00
mga
mgag200 drm/mgag200: fix a test in mga_vga_mode_valid() 2018-01-30 18:05:25 +01:00
msm drm-misc-next for 4.17: 2018-02-16 09:29:27 +10:00
mxsfb drm/mxsfb: Use drm_gem_fb_create() and drm_gem_fb_prepare_fb() 2017-10-01 17:02:20 +02:00
nouveau drm-misc-next for 4.17: 2018-02-16 09:29:27 +10:00
omapdrm drm/omapdrm: Use of_find_backlight helper 2018-02-20 11:07:22 -05:00
panel drm/panel: Use of_find_backlight helper 2018-02-20 11:07:22 -05:00
pl111 drm/pl111: Support multiple endpoints on the CLCD 2018-02-07 09:08:51 +01:00
qxl drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
r128 r128: don't open-code memdup_user() 2017-12-27 19:00:09 -05:00
radeon Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2018-03-01 14:07:22 +10:00
rcar-du drm-misc-next for 4.17: 2018-02-23 11:12:52 +10:00
rockchip drm/rockchip: Respect page offset for PRIME mmap calls 2018-02-18 11:16:55 +01:00
savage
scheduler drm: Fix trailing semicolon 2018-02-19 14:19:04 -05:00
selftests Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
shmobile main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
sis
sti drm/sti: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:41 +01:00
stm drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw 2018-02-08 10:23:32 +01:00
sun4i Merge airlied/drm-next into drm-misc-next 2018-02-16 15:47:43 -05:00
tdfx
tegra Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2018-03-01 14:07:22 +10:00
tilcdc drm/tilcdc: tilcdc_panel: Rename device from "panel" to "tilcdc-panel" 2018-02-28 11:48:25 +02:00
tinydrm drm/tinydrm: Call devres version of of_find_backlight 2018-02-20 11:07:22 -05:00
ttm drm/ttm: add ttm_tt_populate wrapper 2018-02-19 14:19:52 -05:00
tve200 drm/tve200: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:42 +01:00
udl Merge tag 'drm-misc-next-2017-10-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-10-24 16:51:05 +10:00
vc4 drm-misc-next for 4.17: 2018-02-16 09:29:27 +10:00
vgem treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
via Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
virtio drm/virtio: Don't return invalid caps on timeout 2018-02-01 17:45:41 +01:00
vmwgfx drm-misc-next for 4.17: 2018-02-16 09:29:27 +10:00
zte drm/zte: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:59:14 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic.c Add HDCP support to i915 drm driver. 2018-02-16 09:36:04 +10:00
drm_atomic_helper.c drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits 2018-01-30 11:27:26 +01:00
drm_auth.c drm: Check for lessee in DROP_MASTER ioctl 2018-01-31 09:27:51 +01:00
drm_blend.c drm/docs: Align layout of optional plane blending properties 2018-02-20 12:10:46 +01:00
drm_bridge.c
drm_bufs.c
drm_cache.c
drm_color_mgmt.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_connector.c drm/docs: Document "scaling mode" property better 2018-02-20 12:10:46 +01:00
drm_context.c
drm_crtc.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_crtc_helper.c drm: Replace kzalloc with kcalloc 2017-10-13 15:49:03 -04:00
drm_crtc_helper_internal.h
drm_crtc_internal.h drm: rework delayed connector cleanup in connector_iter 2017-12-13 22:59:00 +01:00
drm_debugfs.c drm/debugfs: Fix framebuffer debugfs file init 2017-11-14 11:08:17 +02:00
drm_debugfs_crc.c drm/crc: Add support for polling on the data fd. 2018-02-05 13:22:44 +01:00
drm_dma.c
drm_dp_aux_dev.c Pass mode to wait_on_atomic_t() action funcs and provide default actions 2017-11-13 15:38:16 +00:00
drm_dp_dual_mode_helper.c drm: Add retries for lspcon mode detection 2017-10-13 12:13:54 +03:00
drm_dp_helper.c drm/dp: Add HBR3 support in existing DRM DP helpers 2018-01-26 13:36:53 +02:00
drm_dp_mst_topology.c drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem 2018-02-19 12:58:20 +01:00
drm_drv.c Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_dumb_buffers.c
drm_edid.c drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem 2018-02-19 13:01:20 +01:00
drm_edid_load.c
drm_encoder.c drm: Warn if plane/crtc/encoder/connector index exceeds our 32bit bitmasks 2018-01-29 18:46:53 +02:00
drm_encoder_slave.c
drm_fb_cma_helper.c drm/cma-helper: Add drm_fb_cma_fbdev_init/fini() 2017-12-08 14:27:47 +01:00
drm_fb_helper.c drm/framebuffer: Print task that allocated the fb in debug info. 2017-12-20 15:30:17 +01:00
drm_file.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
drm_flip_work.c
drm_fourcc.c drm/fourcc: Add a alpha field to drm_format_info 2018-01-29 12:07:47 +01:00
drm_framebuffer.c drm/framebuffer: Print task that allocated the fb in debug info. 2017-12-20 15:30:17 +01:00
drm_gem.c drm: Use idr_init_base(1) when using id==0 for invalid 2018-02-19 12:21:24 +00:00
drm_gem_cma_helper.c drm: gem_cma_helper.c: Allow importing of contiguous scatterlists with nents > 1 2017-11-15 18:14:46 +01:00
drm_gem_framebuffer_helper.c drm/gem-fb-helper: drm_gem_fbdev_fb_create() make funcs optional 2017-12-08 14:26:00 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_ioc32.c
drm_ioctl.c drm: Print the pid when debug logging an ioctl error. 2018-02-10 22:23:10 +00:00
drm_irq.c
drm_kms_helper_common.c
drm_lease.c drm: Fix kerneldoc warnings for drm_lease 2018-02-19 10:49:59 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c drm: add func to get max iomem address v2 2018-02-13 11:57:59 -05:00
drm_mipi_dsi.c drm/dsi: Fix improper use of mipi_dsi_device_transfer() return value 2018-01-16 17:10:14 -05:00
drm_mm.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_mode_config.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_mode_object.c drm/mode_object: fix documentation for object lookups. 2017-11-10 13:50:47 +10:00
drm_modes.c drm/doc: Polish for drm_mode_parse_command_line_for_connector 2018-02-20 12:10:46 +01:00
drm_modeset_helper.c drm/modeset-helper: Add simple modeset suspend/resume helpers 2017-11-30 18:18:08 +01:00
drm_modeset_lock.c drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all 2017-10-31 17:36:46 +01:00
drm_of.c drm/drm_of: Move drm_of_panel_bridge_remove_function into header. 2017-10-13 16:59:36 +02:00
drm_panel.c
drm_panel_orientation_quirks.c drm: fix tainted kernel caused by drm_panel_orientation_quirks.c 2017-12-23 20:06:45 +01:00
drm_pci.c drm/core: clean up references to drm_dev_unref() 2017-09-27 10:53:12 +02:00
drm_plane.c Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2018-03-01 14:07:22 +10:00
drm_plane_helper.c drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c 2017-11-20 21:14:22 +02:00
drm_prime.c drm: add kernel doc for exported gem dmabuf_ops 2018-01-19 11:14:59 -05:00
drm_print.c drm/printer: Add drm_vprintf() 2017-11-23 12:31:49 +02:00
drm_probe_helper.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_property.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_rect.c
drm_scatter.c
drm_scdc_helper.c Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2017-09-28 05:46:15 +10:00
drm_simple_kms_helper.c drm: simple_kms_helper: Add mode_valid() callback support 2018-02-20 08:42:17 +01:00
drm_syncobj.c drm: Use idr_init_base(1) when using id==0 for invalid 2018-02-19 12:21:24 +00:00
drm_sysfs.c
drm_trace.h main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
drm_trace_points.c
drm_vblank.c drm/doc: Fix documentation for _vblank_restore(). 2018-02-21 19:29:06 +01:00
drm_vm.c
drm_vma_manager.c drm/drm_vma_manager.c: Remove useless goto statement 2017-11-02 10:44:08 +01:00
Kconfig Fixes for 4.16: 2018-01-25 11:42:25 +10:00
Makefile drm: fix gpu scheduler link order 2018-01-24 15:49:04 -05:00