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OpenCloudOS-Kernel/drivers/gpu/drm/i915
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Jani Nikula e1c412e757 drm/i915: safeguard against too high minimum brightness 
Never trust (your interpretation of) the VBT. Regression from

commit 6dda730e55
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Tue Jun 24 18:27:40 2014 +0300

    drm/i915: respect the VBT minimum backlight brightness

causing div by zero if VBT minimum brightness equals maximum brightness.

Despite my attempts I've failed in my detective work to figure out what
the root cause is. This is not the real fix, but we have to do
something.

Reported-by: Mike Auty <mike.auty@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=86551
Cc: stable@vger.kernel.org (v3.17+)
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
 		2014-11-06 18:20:13 +02:00
..
Kconfig drm/i915: Ditch UMS config option 2014-07-24 10:59:53 +02:00
Makefile drm/i915/bdw: New source and header file for LRs, LRCs and Execlists 2014-08-11 16:00:07 +02:00
dvo.h
…
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 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-10-14 09:39:08 +02:00
i915_debugfs.c drm/i915: Objects on the unbound list may still have an active reference 2014-09-19 14:41:14 +02:00
i915_dma.c Merge tag 'drm-intel-next-2014-09-05' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-09-16 16:02:09 +10:00
i915_drv.c drm/i915: vlv: fix gunit HW state corruption during S4 suspend 2014-11-06 18:16:55 +02:00
i915_drv.h Merge tag 'drm-intel-next-fixes-2014-10-03' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-10-07 14:30:02 +10:00
i915_gem.c drm/i915: Match GTT space sanity checker with implementation 2014-09-19 14:41:18 +02:00
i915_gem_context.c drm/i915/bdw: Apply workarounds in render ring init function 2014-09-03 11:04:42 +02:00
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: fix another use-after-free in i915_gem_evict_everything 2014-09-19 14:41:16 +02:00
i915_gem_execbuffer.c drm/i915: Only track real ppgtt for a context 2014-08-13 14:23:33 +02:00
i915_gem_gtt.c drm/i915: Disable caches for Global GTT. 2014-11-06 18:15:39 +02:00
i915_gem_gtt.h drm/i915: Rework GPU reset sequence to match driver load & thaw 2014-09-03 10:54:09 +02:00
i915_gem_render_state.c drm/i915/bdw: Render state init for Execlists 2014-09-03 11:04:52 +02:00
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: Extend BIOS stolen mem handling to all platform 2014-09-19 14:41:19 +02:00
i915_gem_tiling.c drm/i915/bdw: Let the memory controller do all the swizzling 2014-09-03 11:04:33 +02:00
i915_gem_userptr.c drm/i915: Do not leak pages when freeing userptr objects 2014-09-29 15:31:01 +02:00
i915_gpu_error.c drm/i915: Differentiate between LLC or snooped for the user 2014-09-03 11:04:25 +02:00
i915_ioc32.c drm: Remove DRM_ARRAY_SIZE() for ARRAY_SIZE() 2014-06-10 09:36:17 +10:00
i915_irq.c drm/i915: fix short vs. long hpd detection 2014-10-16 15:00:28 +03:00
i915_params.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-10-14 09:39:08 +02:00
i915_reg.h drm/i915: Enable pixel replicated modes on BDW and HSW. 2014-10-01 10:01:41 +02:00
i915_suspend.c drm/i915: disable GT power saving early during system suspend 2014-05-22 21:53:27 +02:00
i915_sysfs.c drm/i915: Differentiate between LLC or snooped for the user 2014-09-03 11:04:25 +02:00
i915_trace.h drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_trace_points.c
…
i915_ums.c
…
intel_acpi.c
…
intel_bios.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-10-14 09:39:08 +02:00
intel_bios.h drm/i915: Add support for Video Burst Mode for MIPI DSI 2014-08-08 17:43:45 +02:00
intel_crt.c drm/i915: Remove bogus __init annotation from DMI callbacks 2014-08-28 09:54:27 +03:00
intel_ddi.c drm/i915: Rewrite ABS_DIFF() in a safer manner 2014-09-04 15:08:53 +02:00
intel_display.c drm/i915: Ignore VBT backlight check on Macbook 2, 1 2014-10-29 10:34:33 +02:00
intel_dp.c drm/i915/dp: only use training pattern 3 on platforms that support it 2014-10-30 15:51:11 +02:00
intel_dp_mst.c drm/i915: fix build without fbdev. 2014-07-22 20:11:29 +10:00
intel_drv.h drm/i915: Move DIV_ROUND_CLOSEST_ULL macro to header 2014-10-06 16:49:27 +02:00
intel_dsi.c drm/i915: Align intel_dsi*.c files a bit 2014-08-08 17:43:45 +02:00
intel_dsi.h drm/i915: Add support for Video Burst Mode for MIPI DSI 2014-08-08 17:43:45 +02:00
intel_dsi_cmd.c drm/i915: Align intel_dsi*.c files a bit 2014-08-08 17:43:45 +02:00
intel_dsi_cmd.h drm/i915: wait for all DSI FIFOs to be empty 2014-08-07 11:07:15 +02:00
intel_dsi_panel_vbt.c drm/i915: Add support for Video Burst Mode for MIPI DSI 2014-08-08 17:43:45 +02:00
intel_dsi_pll.c drm/i915: Align intel_dsi*.c files a bit 2014-08-08 17:43:45 +02:00
intel_dvo.c drm/i915: Don't call DVO mode_set hook on DPMS changes 2014-09-03 11:05:14 +02:00
intel_fbdev.c drm/i915: make fbdev initialization asynchronous v2 2014-09-03 11:05:01 +02:00
intel_hdmi.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-10-14 09:39:08 +02:00
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: add cherryview specfic forcewake in execlists_elsp_write 2014-09-19 14:41:17 +02:00
intel_lrc.h drm/i915/bdw: Render state init for Execlists 2014-09-03 11:04:52 +02:00
intel_lvds.c Linux 3.17-rc5 2014-09-16 11:38:04 +10:00
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: use helpers 2014-07-18 14:25:15 +10:00
intel_panel.c drm/i915: safeguard against too high minimum brightness 2014-11-06 18:20:13 +02:00
intel_pm.c drm/i915: Don't spam dmesg with rps messages on vlv/chv 2014-09-29 16:53:36 +02:00
intel_renderstate.h drm/i915/bdw: Render state init for Execlists 2014-09-03 11:04:52 +02:00
intel_renderstate_gen6.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_renderstate_gen7.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_renderstate_gen8.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_ringbuffer.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-10-14 09:39:08 +02:00
intel_ringbuffer.h drm/i915/bdw: Apply workarounds in render ring init function 2014-09-03 11:04:42 +02:00
intel_sdvo.c Merge tag 'topic/core-stuff-2014-06-30' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-07-08 11:04:35 +10:00
intel_sdvo_regs.h
…
intel_sideband.c drm/i915: vlv/chv: fix DSI sideband register accessing 2014-05-19 17:50:14 +02:00
intel_sprite.c drm/i915: init sprites with univeral plane init function 2014-09-03 15:43:47 +02:00
intel_tv.c drm/i915: Wait for vblank before enabling the TV encoder 2014-09-08 18:07:08 +03:00
intel_uncore.c drm/i915: Use IS_BROADWELL() instead of IS_GEN8() in forcewake code 2014-09-03 15:14:32 +02:00