Rajkumar Subbiah 4e6242598d UPSTREAM: drm/dp_mst: Fix return code on sideband message failure ... Commit 2f015ec6ea ("drm/dp_mst: Add sideband down request tracing + selftests") added some debug code for sideband message tracing. But it seems to have unintentionally changed the behavior on sideband message failure. It catches and returns failure only if DRM_UT_DP is enabled. Otherwise it ignores the error code and returns success. So on an MST unplug, the caller is unaware that the clear payload message failed and ends up waiting for 4 seconds for the response. Fixes the issue by returning the proper error code. Changes in V2: -- Revise commit text as review comment -- add Fixes text Changes in V3: -- remove "unlikely" optimization Fixes: 2f015ec6ea ("drm/dp_mst: Add sideband down request tracing + selftests") Change-Id: Id45a9308d05134e4874144782e31bd92c7f9faae (cherry picked from commit bb693c114e) Cc: <stable@vger.kernel.org> # v5.5+ Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org> Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/1625585434-9562-1-git-send-email-khsieh@codeaurora.org		2021-09-23 00:24:57 +00:00
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drm	UPSTREAM: drm/dp_mst: Fix return code on sideband message failure	2021-09-23 00:24:57 +00:00
host1x	gpu: host1x: Use different lock classes for each client	2021-04-16 11:43:20 +02:00
ipu-v3	gpu: ipu-v3: remove unused functions	2020-10-26 10:42:38 +01:00
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