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linux/drivers/gpu/drm/i915
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Chris Wilson 54fc7c1c96 drm/i915: Check for driver readyness before handling an underrun interrupt 
When we takeover from the BIOS and install our interrupt handler, the
BIOS may have left us a few surprises in the form of spontaneous
interrupts. (This is especially likely on hardware like 965gm where
display fifo underruns are continuous and the GMCH cannot filter that
interrupt souce.) As we enable our IRQ early so that we can use it
during hardware probing, our interrupt handler must be prepared to
handle a few sources prior to being fully configured. As such, we need
to add a simple is-ready check prior to dereferencing our KMS state for
reporting underruns.

Reported-by: Rob Clark <rclark@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1193972
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
[Jani: dropped the extra !]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 		2015-03-04 10:04:19 +02:00
..
Kconfig drm/i915/dsi: add drm mipi dsi host support 2015-01-29 16:51:39 +01:00
Makefile drm/i915/dsi: remove intel_dsi_cmd.c and the unused functions therein 2015-01-29 16:57:14 +01:00
dvo.h
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dvo_ch7xxx.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ch7017.c
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dvo_ivch.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ns2501.c drm/i915: Check pixel clock in ns2501 mode_valid hook 2014-09-03 11:05:21 +02:00
dvo_sil164.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_tfp410.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
i915_cmd_parser.c drm/i915: Add GPGPU_THREADS_DISPATCHED to the register whitelist 2014-12-16 10:39:10 +01:00
i915_debugfs.c drm/i915: Take runtime pm reference on hangcheck_info 2015-02-09 14:29:36 +02:00
i915_dma.c drm/i915: Remove nested work in gpu error handling 2015-01-29 18:03:07 +01:00
i915_drv.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-02-16 15:48:00 -08:00
i915_drv.h drm/i915: Fix a use after free, and unbalanced refcounting 2015-02-24 15:18:37 +02:00
i915_gem.c drm/i915: Fix a use after free, and unbalanced refcounting 2015-02-24 15:18:37 +02:00
i915_gem_batch_pool.c drm/i915: Mark shadow batch buffers as purgeable 2014-12-16 10:39:09 +01:00
i915_gem_context.c Merge tag 'topic/i915-hda-componentized-2015-01-12' into drm-intel-next-queued 2015-01-12 23:07:46 +01:00
i915_gem_debug.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_dmabuf.c dma-buf: use reservation objects 2014-07-08 13:03:20 -07:00
i915_gem_evict.c drm/i915: Add some extra guards in evict_vm 2015-01-06 09:07:59 +01:00
i915_gem_execbuffer.c drm/i915: Specify bsd rings through exec flag 2015-01-27 09:51:05 +01:00
i915_gem_gtt.c drm/i915: Organize bind_vma funcs 2014-12-17 18:23:12 +01:00
i915_gem_gtt.h drm/i915: Infrastructure for supporting different GGTT views per object 2014-12-15 11:25:04 +01:00
i915_gem_render_state.c drm/i915: Remove obsolete seqno parameter from 'i915_add_request' 2014-12-03 09:35:19 +01:00
i915_gem_render_state.h drm/i915/bdw: Render state init for Execlists 2014-09-03 11:04:52 +02:00
i915_gem_stolen.c drm/i915: Align initial plane backing objects correctly 2015-02-24 15:51:19 +02:00
i915_gem_tiling.c drm/i915: Check obj->vma_list under the struct_mutex 2015-02-24 15:30:42 +02:00
i915_gem_userptr.c drm/i915: Prevent use-after-free in invalidate_range_start callback 2015-02-05 16:31:30 +02:00
i915_gpu_error.c drm/i915: Removed duplicate members from submit_request 2015-01-27 09:50:52 +01:00
i915_ioc32.c drm/i915: remove redundant #ifdef CONFIG_COMPAT 2014-10-24 16:34:07 +02:00
i915_irq.c drm/i915: avoid processing spurious/shared interrupts in low-power states 2015-02-24 15:47:17 +02:00
i915_params.c drm/i915: Add i915.nuclear_pageflip command line param to force atomic (v4) 2015-01-27 09:57:34 +01:00
i915_reg.h drm/i915/skl: Enabling PSR on Skylake 2015-01-28 17:22:29 +01:00
i915_suspend.c Merge tag 'topic/i915-hda-componentized-2015-01-12' into drm-intel-next-queued 2015-01-12 23:07:46 +01:00
i915_sysfs.c drm/i915: Use intel_gpu_freq() and intel_freq_opcode() 2015-01-27 09:51:17 +01:00
i915_trace.h drm/i915: Additional request structure tracing 2014-12-06 01:46:27 +01:00
i915_trace_points.c
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i915_ums.c drm/i915: don't save/restore backlight hist ctl registers 2014-11-14 10:29:28 +01:00
intel_acpi.c
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intel_atomic.c drm/i915: Add crtc state duplication/destruction functions 2015-01-27 09:57:18 +01:00
intel_atomic_plane.c drm/i915: Switch plane properties to full atomic helper. 2015-01-27 09:57:25 +01:00
intel_audio.c drm/i915: Make intel_crtc->config a pointer 2015-01-27 09:50:50 +01:00
intel_bios.c Revert "drm/i915: Parsing LFP brightness control from VBT" 2015-01-07 09:45:38 +01:00
intel_bios.h Revert "drm/i915: Parsing LFP brightness control from VBT" 2015-01-07 09:45:38 +01:00
intel_crt.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_ddi.c drm/i915: Use pipe_config's cpu_transcoder for reading encoder hw state 2015-01-30 19:38:43 +01:00
intel_display.c drm/i915: Fix modeset state confusion in the load detect code 2015-03-03 09:04:33 -08:00
intel_dp.c drm/i915: Really ignore long HPD pulses on eDP 2015-02-11 14:09:51 +02:00
intel_dp_mst.c drm/i915: Use pipe_config's cpu_transcoder for reading encoder hw state 2015-01-30 19:38:43 +01:00
intel_drv.h drm/i915: Add crtc state duplication/destruction functions 2015-01-27 09:57:18 +01:00
intel_dsi.c drm/i915: Correct the base value while updating LP_OUTPUT_HOLD in MIPI_PORT_CTRL 2015-02-09 20:21:08 +02:00
intel_dsi.h drm/i915/dsi: add drm mipi dsi host support 2015-01-29 16:51:39 +01:00
intel_dsi_cmd.h drm/i915/dsi: move dpi_send_cmd() to intel_dsi.c and make it static 2015-01-29 16:56:47 +01:00
intel_dsi_panel_vbt.c drm/i915/dsi: remove intel_dsi_cmd.c and the unused functions therein 2015-01-29 16:57:14 +01:00
intel_dsi_pll.c drm/i915: Use DSI Pll1 for enabling MIPI DSI on Port C 2014-12-10 17:47:21 +01:00
intel_dvo.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_fbc.c drm/i915: Move rotation from intel_plane to drm_plane_state 2015-01-27 09:51:18 +01:00
intel_fbdev.c drm/i915: Rename plane_config to initial_plane_config 2015-01-27 09:51:04 +01:00
intel_fifo_underrun.c drm/i915: Check for driver readyness before handling an underrun interrupt 2015-03-04 10:04:19 +02:00
intel_frontbuffer.c drm/i915: DRRS calls based on frontbuffer 2015-01-27 09:51:15 +01:00
intel_hdmi.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_i2c.c drm/i915: Kill duplicated cdclk readout code from i2c 2014-07-07 11:27:52 +02:00
intel_lrc.c drm/i915: Fix a use after free, and unbalanced refcounting 2015-02-24 15:18:37 +02:00
intel_lrc.h drm/i915: Subsume intel_ctx_submit_request in to drm_i915_gem_request 2015-01-27 09:50:53 +01:00
intel_lvds.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_modes.c
…
intel_opregion.c ACPI / i915: Update the condition to ignore firmware backlight change request 2014-09-30 01:11:18 +02:00
intel_overlay.c drm/i915: Make intel_crtc->config a pointer 2015-01-27 09:50:50 +01:00
intel_panel.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-02-16 15:48:00 -08:00
intel_pm.c drm/i915: Clamp efficient frequency to valid range 2015-02-11 14:09:51 +02:00
intel_psr.c drm/i915/skl: Enabling PSR on Skylake 2015-01-28 17:22:29 +01:00
intel_renderstate.h drm/i915 Add golden context support for Gen9 2014-11-04 14:04:55 +01:00
intel_renderstate_gen6.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen7.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen8.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen9.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_ringbuffer.c drm/i915: Insert a command barrier on BLT/BSD cache flushes 2015-02-09 20:03:15 +02:00
intel_ringbuffer.h drm/i915: Remove FIXME_lrc_ctx backpointer 2015-01-27 09:50:53 +01:00
intel_runtime_pm.c drm/i915/skl: Adding power domains for AUX controllers 2015-01-27 09:50:58 +01:00
intel_sdvo.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_sdvo_regs.h
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intel_sideband.c drm/i915: Correct the IOSF Dev_FN field for IOSF transfers 2015-02-09 14:26:19 +02:00
intel_sprite.c drm/i915: Switch plane properties to full atomic helper. 2015-01-27 09:57:25 +01:00
intel_tv.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_uncore.c drm/i915: Squelch overzealous uncore reset WARN_ON 2015-02-09 14:35:49 +02:00