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mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-04 20:19:47 +08:00
linux/drivers/gpu/drm
Imre Deak aea007741b drm/dp_mst: Fix GUID DPCD write to non-root MST branch devices
The return value on success of drm_dp_send_dpcd_write() called for
non-root MST branch devices from drm_dp_check_mstb_guid() is the number
of bytes transferred. Atm this return value (in case of a complete read)
will be regarded incorrectly as an error by the caller of
drm_dp_check_mstb_guid(). Fix this by converting the return value for a
complete read to the expected success code (0) and for a partial read to
a failure code (-EPROTO).

Fixes: 2554da0de3 ("drm/display: dp-mst-topology: use new DCPD access helpers")
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Lyude Paul <lyude@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20250401103846.686408-1-imre.deak@intel.com
2025-04-03 17:03:01 +03:00
..
adp drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
amd drm/display: dp: change drm_dp_dpcd_read_link_status() return value 2025-03-25 16:20:38 +02:00
arm Merge drm/drm-next into drm-misc-next 2025-02-18 07:43:43 +01:00
armada drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
aspeed drm/aspeed: move to devm_platform_ioremap_resource() usage 2025-02-26 15:27:06 +01:00
ast drm/probe-helper: Do not fail from drmm_kms_helper_poll_init() 2025-03-24 09:31:03 +01:00
atmel-hlcdc drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
bridge drm/bridge: it6505: Switch to common helpers to power up/down dp link 2025-04-02 17:41:27 +03:00
ci drm/ci: arm64.config: mediatek: enable PHY drivers 2025-03-25 16:29:58 +05:30
clients drm/log: select CONFIG_FONT_SUPPORT 2024-12-12 18:26:32 +01:00
display drm/dp_mst: Fix GUID DPCD write to non-root MST branch devices 2025-04-03 17:03:01 +03:00
etnaviv drm/sched: Use struct for drm_sched_init() params 2025-02-12 11:59:52 +01:00
exynos drm/connector: make mode_valid take a const struct drm_display_mode 2025-01-07 12:45:19 +02:00
fsl-dcu drm/fsl-dcu: move to devm_platform_ioremap_resource() usage 2025-03-06 12:37:33 -05:00
gma500 drm/gma500: Remove unused psb_mmu_virtual_to_pfn 2025-03-10 10:14:58 +01:00
gud drm/gud: Set struct drm_device.dma_dev 2025-03-12 09:03:58 +01:00
hisilicon drm/display: dp: change drm_dp_dpcd_read_link_status() return value 2025-03-25 16:20:38 +02:00
hyperv drm: remove driver date from struct drm_driver and all drivers 2024-12-05 12:35:42 +02:00
i915 drm/i915/dp: Use the generic helper to control LTTPR transparent mode 2025-02-25 18:34:14 +02:00
imagination drm/shmem-helper: Refactor locked/unlocked functions 2025-03-26 23:00:12 +03:00
imx drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
ingenic drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
kmb drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
lib
lima drm/shmem-helper: Use refcount_t for pages_use_count 2025-03-26 23:00:19 +03:00
logicvc drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
loongson drm/atomic: Let drivers decide which planes to async flip 2025-02-14 00:54:29 +02:00
mcde drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
mediatek drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
meson drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
mgag200 drm/mgag200: Added support for the new device G200eH5 2025-02-11 10:53:53 +01:00
msm drm/display: dp: change drm_dp_dpcd_read_link_status() return value 2025-03-25 16:20:38 +02:00
mxsfb drm/mxsfb: Remove generic DRM drivers in probe function 2025-03-12 09:14:29 +01:00
nouveau drm/nouveau: fix hibernate on disabled GPU 2025-03-28 18:05:53 -04:00
omapdrm drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
panel drm/panel/panel-simple: Use the new allocation in place of devm_kzalloc() 2025-04-01 16:58:05 +02:00
panfrost drm/panfrost: Force AARCH64_4K page table format on MediaTek MT8192 2025-03-31 12:12:55 +01:00
panthor drm/gem: Change locked/unlocked postfix of drm_gem_v/unmap() function names 2025-03-26 22:59:56 +03:00
pl111 drm: pl111: fix inconsistent indenting warning 2025-03-07 10:25:10 +01:00
qxl drm/connector: make mode_valid take a const struct drm_display_mode 2025-01-07 12:45:19 +02:00
radeon drm/display: dp: change drm_dp_dpcd_read_link_status() return value 2025-03-25 16:20:38 +02:00
renesas drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
rockchip drm/rockchip: lvds: lower log severity for missing pinctrl settings 2025-03-04 16:59:58 +01:00
scheduler drm/sched: Add a basic test for checking credit limit 2025-03-24 10:41:55 +01:00
solomon drm/ssd130x: ensure ssd132x pitch is correct 2025-01-16 10:48:47 +01:00
sprd drm/sprd: move to devm_platform_ioremap_resource() usage 2025-03-10 16:25:01 -04:00
sti drm/sti: move to devm_platform_ioremap_resource() usage 2025-03-10 16:25:26 -04:00
stm drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
sun4i drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
tegra drm/dp: Pull drm_dp_link_power_up/down from Tegra to common drm_dp_helper 2025-04-02 17:41:27 +03:00
tests drm/shmem-helper: Use refcount_t for vmap_use_count 2025-03-26 23:00:22 +03:00
tidss drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
tilcdc drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
tiny drm/cirrus-qemu: Remove custom plane state 2025-04-01 15:35:13 +02:00
ttm drm/ttm/tests: fix incorrect assert in ttm_bo_unreserve_bulk() 2025-03-14 07:54:39 +01:00
tve200 drm-misc-next for 6.14: 2024-12-13 08:48:09 +10:00
udl drm/udl: Switch poll helpers to managed cleanup 2025-03-24 09:31:02 +01:00
v3d drm/v3d: Use V3D_SMS registers for power on/off and reset on V3D 7.x 2025-03-23 11:06:15 -03:00
vboxvideo drm/vboxvideo: Remove unused hgsmi_cursor_position 2025-02-28 09:05:10 +01:00
vc4 drm/vc4: hdmi: Add jack detection to HDMI audio driver 2025-03-25 18:40:12 +00:00
vgem dma-buf/dma-fence: remove unnecessary callbacks 2025-03-06 15:20:53 +01:00
virtio dma-buf: drop caching of sg_tables 2025-03-06 15:21:36 +01:00
vkms drm/vkms: Allow to attach connectors and encoders 2025-03-07 10:58:28 +01:00
vmwgfx drm/vmwgfx: Switch to exclusively using GEM references 2025-03-18 23:59:51 -04:00
xe drm/xe: Increase the XE_PL_TT watermark 2025-03-05 17:08:59 +01:00
xen drm: remove driver date from struct drm_driver and all drivers 2024-12-05 12:35:42 +02:00
xlnx drm/bridge: Add encoder parameter to drm_bridge_funcs.attach 2025-03-20 14:45:38 +01:00
drm_atomic_helper.c drm/bridge: Add helper to reset bridge pipeline 2025-03-20 14:45:48 +01:00
drm_atomic_state_helper.c
drm_atomic_uapi.c drm/atomic: Let drivers decide which planes to async flip 2025-02-14 00:54:29 +02:00
drm_atomic.c drm/atomic: Introduce helper to lookup connector by encoder 2025-03-20 14:45:46 +01:00
drm_auth.c
drm_blend.c
drm_bridge_helper.c drm/bridge: Add helper to reset bridge pipeline 2025-03-20 14:45:48 +01:00
drm_bridge.c drm/bridge: Introduce drm_bridge_is_atomic() helper 2025-03-20 14:45:50 +01:00
drm_buddy.c drm/buddy: Add a testcase to verify the multiroot fini 2025-01-14 20:43:19 +05:30
drm_cache.c
drm_client_event.c
drm_client_modeset.c drm/client: s/unsigned int i/int i/ 2025-03-13 18:33:57 +02:00
drm_client.c drm/gem: Change locked/unlocked postfix of drm_gem_v/unmap() function names 2025-03-26 22:59:56 +03:00
drm_color_mgmt.c
drm_connector.c Linux 6.13 2025-01-23 14:42:21 +01:00
drm_crtc_helper_internal.h drm/connector: make mode_valid take a const struct drm_display_mode 2025-01-07 12:45:19 +02:00
drm_crtc_helper.c drm: Remove redundant statement in drm_crtc_helper_set_mode() 2025-03-27 14:02:57 +02:00
drm_crtc_internal.h
drm_crtc.c drm: add clone mode check for CRTC 2025-01-08 01:39:58 +02:00
drm_damage_helper.c
drm_debugfs_crc.c
drm_debugfs.c drm/bridge: move bridges_show logic from drm_debugfs.c 2025-03-12 10:50:32 +01:00
drm_displayid_internal.h
drm_displayid.c
drm_draw_internal.h drm/panic: Move drawing functions to drm_draw 2024-12-10 14:36:41 +01:00
drm_draw.c drm/format-helper: Move helpers for pixel conversion to header file 2025-04-01 15:35:20 +02:00
drm_drv.c drm/debugfs: add top-level 'bridges' file showing all added bridges 2025-03-12 10:50:33 +01:00
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c drm/edid: Use unsigned int in drm_add_modes_noedid() 2025-04-02 17:19:54 -04:00
drm_eld.c
drm_encoder.c
drm_exec.c
drm_fb_dma_helper.c drm/fb-dma-helper: Test for imported buffers with drm_gem_is_imported() 2025-03-06 08:59:17 +01:00
drm_fb_helper.c drm/modeset: Handle tiled displays in pan_display_atomic. 2025-01-21 11:39:34 +01:00
drm_fbdev_dma.c
drm_fbdev_shmem.c
drm_fbdev_ttm.c
drm_file.c drm/file: Add fdinfo helper for printing regions with prefix 2025-02-07 15:23:36 +01:00
drm_flip_work.c
drm_format_helper.c drm/format-helper: Optimize 32-to-8-bpp conversion 2025-04-01 15:35:24 +02:00
drm_format_internal.h drm/format-helper: Add generic conversion to 8-bit formats 2025-04-01 15:35:22 +02:00
drm_fourcc.c
drm_framebuffer.c - The series "resource: A couple of cleanups" from Andy Shevchenko 2024-11-25 16:09:48 -08:00
drm_gem_atomic_helper.c
drm_gem_dma_helper.c drm/gem-dma: Use dma_buf from GEM object instance 2025-03-06 08:59:01 +01:00
drm_gem_framebuffer_helper.c drm/gem: Change locked/unlocked postfix of drm_gem_v/unmap() function names 2025-03-26 22:59:56 +03:00
drm_gem_shmem_helper.c drm/shmem-helper: Use refcount_t for vmap_use_count 2025-03-26 23:00:22 +03:00
drm_gem_ttm_helper.c
drm_gem_vram_helper.c
drm_gem.c drm/gem: Add _locked postfix to functions that have unlocked counterpart 2025-03-26 23:00:02 +03:00
drm_gpuvm.c
drm_internal.h drm/gem: Change locked/unlocked postfix of drm_gem_v/unmap() function names 2025-03-26 22:59:56 +03:00
drm_ioc32.c
drm_ioctl.c
drm_kms_helper_common.c
drm_lease.c
drm_managed.c drm/managed: Add DRM-managed alloc_ordered_workqueue 2025-01-21 10:32:31 +01:00
drm_mipi_dbi.c drm/mipi-dbi: Test for imported buffers with drm_gem_is_imported() 2025-03-06 08:59:20 +01:00
drm_mipi_dsi.c drm/mipi-dsi: Add helper to find input format 2025-03-30 19:47:12 +03:00
drm_mm.c
drm_mode_config.c drm/connector: Add FIXME for GETRESOURCES ioctl wrt. uninited connectors 2024-12-17 15:43:04 +02:00
drm_mode_object.c
drm_modes.c Linux 6.13-rc6 2025-01-10 14:24:17 +10:00
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c drm: of: drm_of_find_panel_or_bridge: move misplaced comment 2025-02-17 14:17:55 +01:00
drm_panel_backlight_quirks.c drm: panel-backlight-quirks: Add Framework 13 glossy and 2.8k panels 2024-11-21 09:28:15 -06:00
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add ZOTAC Gaming Zone 2025-03-15 20:49:38 +02:00
drm_panel.c drm/panel: deprecate old-style panel allocation 2025-04-01 16:58:05 +02:00
drm_panic_qr.rs drm/panic: add missing Markdown code span 2025-03-27 16:08:55 +01:00
drm_panic.c drm/panic: Better binary encoding in QR code 2025-02-07 17:52:09 +01:00
drm_pci.c
drm_plane_helper.c
drm_plane.c
drm_prime.c drm/gem: Change locked/unlocked postfix of drm_gem_v/unmap() function names 2025-03-26 22:59:56 +03:00
drm_print.c drm/print: add drm_print_hex_dump() 2024-12-10 14:08:40 +02:00
drm_privacy_screen_x86.c
drm_privacy_screen.c
drm_probe_helper.c drm/probe-helper: Do not fail from drmm_kms_helper_poll_init() 2025-03-24 09:31:03 +01:00
drm_property.c
drm_rect.c
drm_self_refresh_helper.c
drm_simple_kms_helper.c
drm_suballoc.c
drm_syncobj.c drm/syncobj: Extend EXPORT_SYNC_FILE for timeline syncobjs 2025-04-01 18:30:25 +02:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vblank_work.c treewide: Introduce kthread_run_worker[_on_cpu]() 2025-01-08 18:15:03 +01:00
drm_vblank.c
drm_vma_manager.c
drm_writeback.c drm: writeback: Fix kernel doc name 2025-02-20 15:02:09 +01:00
Kconfig drm: Move some options to separate new Kconfig 2025-03-24 10:41:51 +01:00
Kconfig.debug drm/sched: Add scheduler unit testing infrastructure and some basic tests 2025-03-24 10:41:52 +01:00
Makefile drm/bridge: Add helper to reset bridge pipeline 2025-03-20 14:45:48 +01:00