Ville Syrjälä f990312aaa drm/i915: Prevent zero length "index" write ...

commit 56350fb897 upstream.

The hardware always writes one or two bytes in the index portion of
an indexed transfer. Make sure the message we send as the index
doesn't have a zero length.

Cc: Daniel Kurtz <djkurtz@chromium.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sean Paul <seanpaul@chromium.org>
Fixes: 56f9eac054 ("drm/i915/intel_i2c: use INDEX cycles for i2c read transactions")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171123194157.25367-3-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit bb9e0d4bca)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-12-05 11:24:35 +01:00

..

gvt

drm/i915: gvt: Introduce the basic architecture of GVT-g

2016-06-17 20:35:06 +01:00

dvo_ch7xxx.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo_ch7017.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo_ivch.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo_ns2501.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo_sil164.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo_tfp410.c

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

dvo.h

drm/i915: constify intel_dvo_dev_ops structures

2015-12-09 08:21:10 +01:00

i915_cmd_parser.c

drm/i915: use NULL for NULL pointers

2016-09-16 10:35:43 +03:00

i915_debugfs.c

Merge tag 'drm-intel-next-2016-09-19' of git://anongit.freedesktop.org/drm-intel into drm-next

2016-09-20 06:23:22 +10:00

i915_drv.c

drm/i915: Prevent the system suspend complete optimization

2017-06-17 06:41:49 +02:00

i915_drv.h

drm/i915/vbt: don't propagate errors from intel_bios_init()

2017-06-14 15:06:05 +02:00

i915_gem_batch_pool.c

drm/i915: Double check the active status on the batch pool

2016-08-04 20:19:50 +01:00

i915_gem_batch_pool.h

drm/i915: Double check the active status on the batch pool

2016-08-04 20:19:50 +01:00

i915_gem_context.c

drm/i915: Update reset path to fix incomplete requests

2016-09-09 14:23:05 +01:00

i915_gem_dmabuf.c

drm/prime: Take a ref on the drm_dev when exporting a dma_buf

2016-10-05 15:30:32 +02:00

i915_gem_dmabuf.h

drm/i915: Serialise presentation with imported dmabufs

2016-06-17 10:32:26 +01:00

i915_gem_evict.c

drm/i915: Clear ret before unbinding in i915_gem_evict_something()

2017-02-01 08:33:10 +01:00

i915_gem_execbuffer.c

drm/i915: Drop support for I915_EXEC_CONSTANTS_* execbuf parameters.

2017-04-18 07:11:46 +02:00

i915_gem_fence.c

drm/i915: Use fence_write() from rpm resume

2016-10-28 15:18:51 +03:00

i915_gem_gtt.c

drm/i915: remove writeq ifdeffery

2016-09-12 11:33:56 +03:00

i915_gem_gtt.h

drm/i915: Embed the scratch page struct into each VM

2016-08-22 12:19:52 +01:00

i915_gem_render_state.c

drm/i915: Use VMA for render state page tracking

2016-08-15 11:01:11 +01:00

i915_gem_render_state.h

drm/i915: Use VMA for render state page tracking

2016-08-15 11:01:11 +01:00

i915_gem_request.c

drm/i915: Distinguish last emitted request from last submitted request

2016-10-10 16:06:43 +03:00

i915_gem_request.h

drm/i915: Fix oopses in the overlay code due to i915_gem_active stuff

2017-01-12 11:39:07 +01:00

i915_gem_shrinker.c

drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker)

2017-04-18 07:11:46 +02:00

i915_gem_stolen.c

drm/i915/gvt: Disable access to stolen memory as a guest

2017-05-25 15:44:49 +02:00

i915_gem_tiling.c

drm/i915: Move fence tracking from object to vma

2016-08-18 22:36:50 +01:00

i915_gem_userptr.c

mm: replace get_user_pages_remote() write/force parameters with gup_flags

2016-10-19 08:12:02 -07:00

i915_gem.c

drm/i915: Drop support for I915_EXEC_CONSTANTS_* execbuf parameters.

2017-04-18 07:11:46 +02:00

i915_gem.h

drm/i915: Add GEM debugging Kconfig option

2016-04-14 10:45:40 +01:00

i915_gpu_error.c

drm/i915: Make HWS_NEEDS_PHYSICAL the exception

2016-09-07 16:07:09 -07:00

i915_guc_reg.h

drm/i915/guc: general tidying up (loader)

2016-09-15 10:56:02 +01:00

i915_guc_submission.c

drm/i915/guc: Unwind GuC workqueue reservation if request construction fails

2016-10-10 16:06:44 +03:00

i915_ioc32.c

Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued

2015-07-15 16:36:50 +02:00

i915_irq.c

drm/i915: Stop using RP_DOWN_EI on Baytrail

2017-04-18 07:11:46 +02:00

i915_memcpy.c

drm/i915: Mark the static key for movntqda as static

2016-08-17 12:36:07 +01:00

i915_mm.c

drm/i915: Use remap_io_mapping() to prefault all PTE in a single pass

2016-08-19 17:13:36 +01:00

i915_params.c

drm/i915: Add a way to test the modeset done during gpu reset, v3.

2016-08-05 23:28:28 +03:00

i915_params.h

drm/i915: Add a way to test the modeset done during gpu reset, v3.

2016-08-05 23:28:28 +03:00

i915_pci.c

drm/i915: actually drive the BDW reserved IDs

2017-04-12 12:41:18 +02:00

i915_pvinfo.h

drm/i915: Fix GVT-g PVINFO version compatibility check

2017-06-24 07:11:13 +02:00

i915_reg.h

drm/i915: clarify PMINTRMSK/pm_intr_keep usage

2016-09-15 10:55:43 +01:00

i915_suspend.c

drm/i915: pdev cleanup

2016-08-22 12:19:52 +01:00

i915_sw_fence.c

drm/i915: Add a sw fence for collecting up dma fences

2016-09-09 14:22:55 +01:00

i915_sw_fence.h

drm/i915: Add a sw fence for collecting up dma fences

2016-09-09 14:22:55 +01:00

i915_sysfs.c

drm/i915: Fix setting of boost freq tunable

2017-01-09 08:32:26 +01:00

i915_trace_points.c

…

i915_trace.h

drm/i915: Remove surplus drm_device parameter to i915_gem_evict_something()

2016-08-04 20:19:50 +01:00

i915_vgpu.c

drm/i915: Fix GVT-g PVINFO version compatibility check

2017-06-24 07:11:13 +02:00

i915_vgpu.h

drm/i915: Fold vGPU active check into inner functions

2016-06-17 19:44:29 +01:00

intel_acpi.c

drm/i915: Drop unnecessary #include <linux/vga_switcheroo.h>

2015-10-13 10:18:38 +02:00

intel_atomic_plane.c

drm: remove const attribute to hint at caller that they now own the memory

2016-08-16 14:06:53 +02:00

intel_atomic.c

drm: Consolidate plane arrays in drm_atomic_state

2016-06-02 17:20:25 +02:00

intel_audio.c

Merge tag 'drm-intel-next-2016-09-19' of git://anongit.freedesktop.org/drm-intel into drm-next

2016-09-20 06:23:22 +10:00

intel_bios.c

drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel

2017-10-18 09:35:40 +02:00

intel_bios.h

drm/i915: Parse LFP brightness control field in VBT

2016-05-02 16:17:38 +03:00

intel_breadcrumbs.c

drm/i915: Reset the breadcrumbs IRQ more carefully

2016-10-10 16:06:44 +03:00

intel_color.c

drm/i915: Fix out-of-bounds array access in bdw_load_gamma_lut

2017-08-16 13:43:18 -07:00

intel_crt.c

drm/i915: Don't leak edid in intel_crt_detect_ddc()

2017-02-01 08:33:11 +01:00

intel_csr.c

drm/i915: Fix botched merge that downgrades CSR versions.

2016-08-22 16:08:32 +03:00

intel_ddi.c

drm/i915: Add support for Kabylake to function obtaining shared PLL

2016-09-12 22:06:08 -07:00

intel_device_info.c

drm/i915: workaround sparse warning on variable length arrays

2016-10-28 15:17:50 +03:00

intel_display.c

drm/i915: Read timings from the correct transcoder in intel_crtc_mode_get()

2017-10-18 09:35:40 +02:00

intel_dp_aux_backlight.c

drm/i915: Add Backlight Control using DPCD for eDP connectors (v9)

2016-04-26 15:17:54 +03:00

intel_dp_link_training.c

drm/i915: Make DP link training channel equalization DP 1.2 Spec compliant

2016-09-09 14:53:18 -07:00

intel_dp_mst.c

drm/i915: Remove ddi_pll_sel from intel_crtc_state

2016-09-07 13:55:33 -07:00

intel_dp.c

drm/i915/edp: read edp display control registers unconditionally

2017-11-08 10:08:32 +01:00

intel_dpio_phy.c

drm/i915: Mass convert dev->dev_private to to_i915(dev)

2016-07-04 12:54:07 +01:00

intel_dpll_mgr.c

drm/i915/bxt: Add MST support when do DPLL calculation

2017-02-14 15:25:36 -08:00

intel_dpll_mgr.h

drm/i915/dp: Add a standalone function to obtain shared dpll for HSW/BDW/SKL/BXT

2016-09-09 14:53:18 -07:00

intel_drv.h

Revert "drm/i915: Do not rely on wm preservation for ILK watermarks"

2017-11-30 08:39:09 +00:00

intel_dsi_dcs_backlight.c

drm/i915: Mass convert dev->dev_private to to_i915(dev)

2016-07-04 12:54:07 +01:00

intel_dsi_panel_vbt.c

drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting

2017-01-09 08:32:25 +01:00

intel_dsi_pll.c

drm/i915: Mass convert dev->dev_private to to_i915(dev)

2016-07-04 12:54:07 +01:00

intel_dsi.c

drm/i915: Convert intel_dsi to use atomic state

2016-08-23 11:21:39 +02:00

intel_dsi.h

drm/i915/dsi: CABC support for Panel PWM backlight control

2016-05-17 16:12:39 +03:00

intel_dvo.c

drm/i915/dvo: Remove dangling call to drm_encoder_cleanup()

2016-08-29 12:28:09 +03:00

intel_engine_cs.c

drm/i915: Reset the breadcrumbs IRQ more carefully

2016-10-10 16:06:44 +03:00

intel_fbc.c

drm/i915/fbc: fix CFB size calculation for gen8+

2016-10-28 15:23:52 +03:00

intel_fbdev.c

drm/i915: prevent crash with .disable_display parameter

2017-02-01 08:33:11 +01:00

intel_fifo_underrun.c

drm/i915: Convert dev_priv->dev backpointers to dev_priv->drm

2016-07-05 11:58:45 +01:00

intel_frontbuffer.c

drm/i915: Use dev_priv consistently through the intel_frontbuffer interface

2016-08-04 20:20:03 +01:00

intel_frontbuffer.h

drm/i915: Use dev_priv consistently through the intel_frontbuffer interface

2016-08-04 20:20:03 +01:00

intel_guc_fwif.h

drm/doc: Fix more kerneldoc/sphinx warnings

2016-08-16 16:09:58 +02:00

intel_guc_loader.c

drm/i915/guc: general tidying up (loader)

2016-09-15 10:56:02 +01:00

intel_guc.h

drm/i915/guc: Unwind GuC workqueue reservation if request construction fails

2016-10-10 16:06:44 +03:00

intel_gvt.c

drm/i915/gvt: Mark i915.enable_gvt as false if loading fails

2016-06-21 12:40:13 +01:00

intel_gvt.h

drm/i915: gvt: Introduce the basic architecture of GVT-g

2016-06-17 20:35:06 +01:00

intel_hdmi.c

drm/i915: Respect alternate_ddc_pin for all DDI ports

2016-11-07 18:22:06 +02:00

intel_hotplug.c

drm/i915: Only enable hotplug interrupts if the display interrupts are enabled

2017-04-18 07:11:45 +02:00

intel_i2c.c

drm/i915: Prevent zero length "index" write

2017-12-05 11:24:35 +01:00

intel_lrc.c

Revert "drm/i915/execlists: Reset RING registers upon resume"

2017-04-18 07:11:49 +02:00

intel_lrc.h

drm/i915: Update reset path to fix incomplete requests

2016-09-09 14:23:05 +01:00

intel_lvds.c

Merge tag 'drm-intel-next-2016-09-19' of git://anongit.freedesktop.org/drm-intel into drm-next

2016-09-20 06:23:22 +10:00

intel_mocs.c

drm/i915: Rename struct intel_ringbuffer to struct intel_ring

2016-08-02 22:58:16 +01:00

intel_mocs.h

drm/i915: rename 'ring' where it refers to an engine or engine_id

2016-07-21 09:59:41 +01:00

intel_modes.c

drm: Remove superflous linux/fb.h includes

2016-08-12 10:41:39 +02:00

intel_opregion.c

drm/i915: Fix not finding the VBT when it overlaps with OPREGION_ASLE_EXT

2017-03-15 10:02:51 +08:00

intel_overlay.c

drm/i915: Fix the overlay frontbuffer tracking

2017-10-08 10:26:02 +02:00

intel_panel.c

drm/i915/backlight: setup backlight pwm alternate increment on backlight enable

2016-10-10 16:05:52 +03:00

intel_pm.c

Revert "drm/i915: Do not rely on wm preservation for ILK watermarks"

2017-11-30 08:39:09 +00:00

intel_psr.c

drm/i915/psr: disable psr2 for resolution greater than 32X20

2017-10-08 10:26:05 +02:00

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_renderstate.h

drm/i915: Remove duplicate golden render state init from execlists

2016-08-02 22:58:30 +01:00

intel_ringbuffer.c

drm/i915: Remove WaDisableLSQCROPERFforOCL KBL workaround.

2017-02-01 08:33:14 +01:00

intel_ringbuffer.h

drm/i915: Reset the breadcrumbs IRQ more carefully

2016-10-10 16:06:44 +03:00

intel_runtime_pm.c

drm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating

2017-01-09 08:32:26 +01:00

intel_sdvo_regs.h

drm/i915/sdvo: revert bogus kernel-doc comments to normal comments

2016-01-20 10:21:34 +02:00

intel_sdvo.c

drm/i915: Convert intel_sdvo to use atomic state

2016-08-23 11:21:51 +02:00

intel_sideband.c

drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()

2016-06-30 15:42:33 +01:00

intel_sprite.c

drm/i915: Workaround VLV/CHV DSI scanline counter hardware fail

2017-06-17 06:41:58 +02:00

intel_tv.c

drm/i915: Make encoder->compute_config take the connector state

2016-08-23 11:07:23 +02:00

intel_uncore.c

drm/i915: Just clear the mmiodebug before a register access

2016-10-10 16:06:41 +03:00

intel_vbt_defs.h

drm/i915: Assume non-DP++ port if dvo_port is HDMI and there's no AUX ch specified in the VBT

2016-11-16 10:06:14 +02:00

Kconfig

drm/i915: gvt: Introduce the basic architecture of GVT-g

2016-06-17 20:35:06 +01:00

Kconfig.debug

drm/i915: Select DRM_VGEM for igt

2016-07-10 13:22:39 +01:00

Makefile

drm/i915: Add a sw fence for collecting up dma fences

2016-09-09 14:22:55 +01:00