AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/gpu/drm/i915
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Linus Torvalds d7b9935a34 i915: Fix i915 suspend delay 
During system suspend, the "wait for ring buffer to empty" loop would
always time out after three seconds, because the faster cached ring
buffer head read would always return zero.  Force the slow-and-careful
PIO read on all but the first iterations of the loop to fix it.

This also removes the unused (and useless) 'actual_head' variable that
tried to approximate doing this, but did it incorrectly.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Dave Airlie <airlied@linux.ie>
Cc: DRI mailing list <dri-devel@lists.freedesktop.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-20 16:18:25 -08:00
..
dvo_ch7xxx.c drm/i915: use GMBUS to manage i2c links 2010-09-18 15:46:19 +01:00
dvo_ch7017.c drm/i915/dvo: Report LVDS attached to ch701x as connected 2010-12-30 13:50:43 +00:00
dvo_ivch.c drm/i915: use GMBUS to manage i2c links 2010-09-18 15:46:19 +01:00
dvo_sil164.c drm/i915: use GMBUS to manage i2c links 2010-09-18 15:46:19 +01:00
dvo_tfp410.c drm/i915: use GMBUS to manage i2c links 2010-09-18 15:46:19 +01:00
dvo.h drm/i915: Subclass intel_encoder. 2010-08-09 11:24:28 -07:00
i915_debugfs.c drm/i915/debugfs: Correct format after changing type of err object 'size' 2011-01-12 20:24:50 +00:00
i915_dma.c drm/i915: Remove impossible test 2011-01-11 20:37:06 +00:00
i915_drv.c drm/i915: Add a module option to override the use of SSC 2011-01-13 16:05:58 +00:00
i915_drv.h drm/i915: Add a module option to override the use of SSC 2011-01-13 16:05:58 +00:00
i915_gem_debug.c drm/i915: Use drm_i915_gem_object as the preferred type 2010-11-23 20:19:10 +00:00
i915_gem_evict.c drm/i915/evict: Ensure we completely cleanup on failure 2011-01-11 22:55:39 +00:00
i915_gem_execbuffer.c drm/i915: Disable GPU semaphores on SandyBridge mobile 2011-01-14 09:51:05 +00:00
i915_gem_gtt.c drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT 2011-01-11 20:44:56 +00:00
i915_gem_tiling.c drm/i915: Pipelined fencing [infrastructure] 2010-12-02 10:07:05 +00:00
i915_gem.c drm/i915: If we hit OOM when allocating GTT pages, clear the aperture 2011-01-11 22:55:48 +00:00
i915_ioc32.c drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
i915_irq.c drm/i915: Fix error handler to capture the first batch after the seqno 2011-01-13 16:06:05 +00:00
i915_mem.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
i915_reg.h drm/i915: detect & report PCH display error interrupts 2011-01-11 20:44:01 +00:00
i915_suspend.c drm/i915: cleanup rc6 code 2011-01-11 20:43:59 +00:00
i915_trace_points.c drm/i915: Add tracepoints 2009-09-23 01:05:21 +01:00
i915_trace.h drm/i915: Kill the get_fence tracepoint 2010-12-02 10:20:47 +00:00
intel_acpi.c drm/i915: i915 cannot provide switcher services. 2010-12-08 15:40:44 +10:00
intel_bios.c drm/i915: Add a module option to override the use of SSC 2011-01-13 16:05:58 +00:00
intel_bios.h drm/i915: Initialize panel timing registers if VBIOS did not 2010-10-19 09:17:24 +01:00
intel_crt.c drm/i915/crt: Check for a analog monitor in case of DVI-I 2011-01-11 20:26:33 +00:00
intel_display.c drm/i915: Add a module option to override the use of SSC 2011-01-13 16:05:58 +00:00
intel_dp.c drm/i915: fix calculation of eDP signal levels on Sandybridge 2011-01-11 20:26:54 +00:00
intel_drv.h drm/i915/panel: Only record the backlight level when it is enabled 2011-01-11 20:27:04 +00:00
intel_dvo.c drm/i915/dvo: Fix panel and DDC i2c pins 2010-09-28 23:34:44 +01:00
intel_fb.c Revert "drm: Update fbdev fb_fix_screeninfo" 2011-01-14 16:10:28 -08:00
intel_hdmi.c i915: enable AVI infoframe for intel_hdmi.c [v4] 2010-10-22 09:14:30 +01:00
intel_i2c.c Merge branch 'drm-intel-fixes' into drm-intel-next 2010-11-15 06:49:30 +00:00
intel_lvds.c drm/i915/lvds: Add AOpen i915GMm-HFS to the list of false-positive LVDS 2011-01-14 16:36:20 +00:00
intel_modes.c drm/i915: use GMBUS to manage i2c links 2010-09-18 15:46:19 +01:00
intel_opregion.c drm/i915: Implement GPU semaphores for inter-ring synchronisation on SNB 2010-12-05 00:37:38 +00:00
intel_overlay.c drm/i915: Implement GPU semaphores for inter-ring synchronisation on SNB 2010-12-05 00:37:38 +00:00
intel_panel.c drm/i915/panel: The backlight is enabled if the current value is non-zero 2011-01-12 20:24:50 +00:00
intel_ringbuffer.c i915: Fix i915 suspend delay 2011-01-20 16:18:25 -08:00
intel_ringbuffer.h i915: Fix i915 suspend delay 2011-01-20 16:18:25 -08:00
intel_sdvo_regs.h drm/i915/sdvo: Add missing TV filters 2010-08-09 11:24:29 -07:00
intel_sdvo.c drm/i915/sdvo: Defer detection of output capabilities until probing 2011-01-11 20:26:55 +00:00
intel_tv.c drm/i915: Implement GPU semaphores for inter-ring synchronisation on SNB 2010-12-05 00:37:38 +00:00
Makefile drm/i915: Split i915_gem_execbuffer into its own file. 2010-11-25 21:19:25 +00:00