drm/amd/display: use a more accurate check in dm_helpers_dp_read_dpcd()

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We should be checking if drm_dp_dpcd_read() returns the size that we are
asking it to read instead of just checking if it is greater than zero.
So, compare the return value of drm_dp_dpcd_read() to the requested
read size.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Hamza Mahfooz 2023-03-08 16:14:08 -05:00 • committed by Alex Deucher

parent 84b31d484e

commit 4648cf5fc8

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

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