6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alvin Lee <alvin.lee2@xxxxxxx> commit 3c9ea68cb61bd7e5bd312c06a12adada74ff5805 upstream. When waiting for the ACK for INBOX0 message, we have to ensure to include the udelay for proper wait time Cc: stable@xxxxxxxxxxxxxxx # 6.1+ Reviewed-by: Samson Tam <samson.tam@xxxxxxx> Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx> Signed-off-by: Alvin Lee <alvin.lee2@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -964,6 +964,7 @@ enum dmub_status dmub_srv_wait_for_inbox ack = dmub->hw_funcs.read_inbox0_ack_register(dmub); if (ack) return DMUB_STATUS_OK; + udelay(1); } return DMUB_STATUS_TIMEOUT; }
