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Mika Kuoppala 47e9766df0 drm/i915: Fix timeout with missed interrupts in __wait_seqno 
Commit 094f9a54e3 ("drm/i915: Fix __wait_seqno to use true infinite
timeouts") added support for __wait_seqno to detect missing interrupts and
go around them by polling. As there is also timeout detection in
__wait_seqno, the polling and timeout detection were done with the same
timer.

When there has been missed interrupts and polling is needed, the timer is
set to trigger in (now + 1) jiffies in future, instead of the caller
specified timeout.

Now when io_schedule() returns, we calculate the jiffies left to timeout
using the timer expiration value. As the current jiffies is now bound to be
always equal or greater than the expiration value, the timeout_jiffies will
become zero or negative and we return -ETIME to caller even tho the
timeout was never reached.

Fix this by decoupling timeout calculation from timer expiration.

v2: Commit message with some sense in it (Chris Wilson)

v3: add parenthesis on timeout_expire calculation

v4: don't read jiffies without timeout (Chris Wilson)

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
 		2013-12-12 15:27:21 +01:00
..
Kconfig i915, fbdev: Fix Kconfig typo 2013-11-21 21:59:02 +01:00
Makefile drm/i915: rename intel_fb.c to intel_fbdev.c 2013-10-11 23:37:33 +02:00
dvo.h drm/i915: Remove unused mode_fixup() vfunc of struct intel_dvo_dev_ops 2013-09-05 21:39:59 +02:00
dvo_ch7xxx.c drm/i915: dvo_ch7xxx: fix vsync polarity setting 2013-07-25 16:10:22 +02:00
dvo_ch7017.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ivch.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ns2501.c drm/i915/ns2501: Rip out the reenable hack 2013-11-04 16:32:31 +01:00
dvo_sil164.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_tfp410.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
i915_debugfs.c drm/i915: add some runtime PM get/put calls 2013-12-10 22:50:17 +01:00
i915_dma.c drm/i915: add initial Runtime PM functions 2013-12-10 22:43:14 +01:00
i915_drv.c drm/i915: do adapter power state notification at runtime PM 2013-12-10 22:44:00 +01:00
i915_drv.h drm/i915: Use FLISDSI interface for band gap reset 2013-12-11 23:52:17 +01:00
i915_gem.c drm/i915: Fix timeout with missed interrupts in __wait_seqno 2013-12-12 15:27:21 +01:00
i915_gem_context.c drm/i915: Remove defunct ctx switch comments 2013-11-26 10:12:16 +01:00
i915_gem_debug.c drm/i915: Fix #endif comment 2013-08-09 10:45:52 +02:00
i915_gem_dmabuf.c drm/i915: Pin pages whilst mapping the dma-buf 2013-09-03 19:17:58 +02:00
i915_gem_evict.c drm/i915: trace vm eviction instead of everything 2013-10-01 07:45:20 +02:00
i915_gem_execbuffer.c drm/i915: add runtime put/get calls at the basic places 2013-12-10 22:47:33 +01:00
i915_gem_gtt.c drm/i915: Move the gtt mm takedown to cleanup 2013-11-26 10:21:27 +01:00
i915_gem_stolen.c Linux 3.12-rc2 2013-09-24 09:32:53 +02:00
i915_gem_tiling.c drm/i915: prevent tiling changes on framebuffer backing storage 2013-10-16 22:04:52 +02:00
i915_gpu_error.c drm/i915: Record BB_ADDR for every ring 2013-12-11 23:52:12 +01:00
i915_ioc32.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
i915_irq.c drm/i915: disable interrupts when enabling PC8 2013-12-10 22:56:34 +01:00
i915_reg.h drm/i915: Use FLISDSI interface for band gap reset 2013-12-11 23:52:17 +01:00
i915_suspend.c drm/i915: do not save/restore backlight registers in KMS 2013-11-14 12:22:32 +01:00
i915_sysfs.c drm/i915: add some runtime PM get/put calls 2013-12-10 22:50:17 +01:00
i915_trace.h drm/i915: Add a tracepoint for using a semaphore 2013-10-01 07:45:24 +02:00
i915_trace_points.c
…
i915_ums.c drm/i915: do not save/restore backlight registers in KMS 2013-11-14 12:22:32 +01:00
intel_acpi.c ACPI: Eliminate the DEVICE_ACPI_HANDLE() macro 2013-11-14 23:17:21 +01:00
intel_bios.c drm/i915: Fix 66 MHz LVDS SSC freq for gen2 2013-12-11 23:52:15 +01:00
intel_bios.h drm/i915: use __packed instead of __attribute__((packed)) 2013-12-03 18:19:49 +01:00
intel_crt.c drm/i915: Return a drm_mode_status enum in the mode_valid vfuncs 2013-11-28 16:49:33 +01:00
intel_ddi.c drm/i915: don't touch the VDD when disabling the panel 2013-12-11 23:51:41 +01:00
intel_display.c drm/i915: Decrease gen2 vco frequency minimum to 908 MHz 2013-12-11 23:52:16 +01:00
intel_dp.c drm/i915: fix VDD override off wait 2013-12-11 23:52:11 +01:00
intel_drv.h drm/i915: remove i915_disable_vga_mem declaration 2013-12-12 13:28:10 +01:00
intel_dsi.c drm/i915: Parametrize the dphy and other spec specific parameters 2013-12-11 23:52:20 +01:00
intel_dsi.h drm/i915: Parametrize the dphy and other spec specific parameters 2013-12-11 23:52:20 +01:00
intel_dsi_cmd.c drm/i915/dsi: s/size_t/int/ 2013-09-04 17:34:51 +02:00
intel_dsi_cmd.h drm/i915/dsi: s/size_t/int/ 2013-09-04 17:34:51 +02:00
intel_dsi_pll.c drm/i915: Try harder to get best m, n, p values with minimal error 2013-12-11 23:52:18 +01:00
intel_dvo.c drm/i915: Return a drm_mode_status enum in the mode_valid vfuncs 2013-11-28 16:49:33 +01:00
intel_fbdev.c drm/i915: drop DRM_ERROR in intel_fbdev init 2013-11-28 14:55:54 +01:00
intel_hdmi.c drm/i915: Don't cast away const from infoframe buffer 2013-12-10 14:49:04 +01:00
intel_i2c.c drm/i915/vlv: split CCK and DDR freq usage 2013-11-05 19:28:47 +01:00
intel_lvds.c drm/i915: Make downclock deduction common for all panels 2013-12-10 13:26:15 +01:00
intel_modes.c drm/i915: Add "Automatic" mode for the "Broadcast RGB" property 2013-01-20 13:09:44 +01:00
intel_opregion.c Linux 3.13-rc3 2013-12-09 09:19:14 +01:00
intel_overlay.c drm/i915: use pointer = k[cmz...]alloc(sizeof(*pointer), ...) pattern 2013-10-01 07:45:01 +02:00
intel_panel.c drm/i915: add some runtime PM get/put calls 2013-12-10 22:50:17 +01:00
intel_pm.c drm/i915: touch VGA MSR after we enable the power well 2013-12-12 13:28:37 +01:00
intel_ringbuffer.c drm/i915: Add power well arguments to force wake routines. 2013-11-28 08:31:22 +01:00
intel_ringbuffer.h drm/i915: Write RING_TAIL once per-request 2013-09-10 15:35:58 +02:00
intel_sdvo.c drm/i915: Don't cast away const from infoframe buffer 2013-12-10 14:49:04 +01:00
intel_sdvo_regs.h drm/i915: use __packed instead of __attribute__((packed)) 2013-12-03 18:19:49 +01:00
intel_sideband.c drm/i915: Use FLISDSI interface for band gap reset 2013-12-11 23:52:17 +01:00
intel_sprite.c drm/i915: Enable pipe gamma for sprites 2013-11-21 09:09:37 +01:00
intel_tv.c drm/i915/tv: add ->get_config callback 2013-11-18 22:24:33 +01:00
intel_uncore.c drm/i915: add some runtime PM get/put calls 2013-12-10 22:50:17 +01:00