drm/msm/dp: Shrink locking area of dp_aux_transfer()

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We don't need to hold the lock to inspect the message we're going to
transfer, and we don't need to clear the busy flag either. Take the lock
later and bail out earlier if conditions aren't met.

Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Abhinav Kumar <abhinavk@codeaurora.org>
Cc: Kuogee Hsieh <khsieh@codeaurora.org>
Cc: aravindh@codeaurora.org
Cc: Sean Paul <sean@poorly.run>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Kuogee Hsieh <khsieh@codeaurora.org>
Link: https://lore.kernel.org/r/20210507212505.1224111-3-swboyd@chromium.org
Signed-off-by: Rob Clark <robdclark@chromium.org>

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Stephen Boyd 2021-05-07 14:25:04 -07:00 • committed by Rob Clark

parent 24c7861b81

commit 47327fdd7e

1 changed files with 9 additions and 10 deletions

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drivers/gpu/drm/msm/dp/dp_aux.c

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