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authorWenjing Liu <wenjing.liu@amd.com>2021-05-17 15:54:19 -0400
committerAlex Deucher <alexander.deucher@amd.com>2021-06-08 12:15:54 -0400
commit416b4e7596fa8cbe47f94f53009e252acfd36ece (patch)
tree4550ee21d620fb96a23fa7f0757a056e0bdbf9a0 /mm/maccess.c
parentf56c837afce45ec904b23bfd4d7df3e304624972 (diff)
drm/amd/display: delay 100ms before restart after failing to read CP_IRQ
[why] Some DPRX will issue CP_IRQ when user disconnects a display that has been authenticated. Since display is being disconnecting dpcd read will fail. This will cause us to attempt HDCP retry on disconnection. We are adding a 100ms delay before retry. So we will only start retry if within 100ms there is no disconnection call to HDCP module. Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Stylon Wang <stylon.wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'mm/maccess.c')
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