drm/amd/display: Include udelay when waiting for INBOX0 ACK

[platform/kernel/linux-starfive.git] / drivers / gpu / drm / amd / display / dmub / src / dmub_srv.c

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index c332787..f58803d 100644 (file)
--- 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_inbox0_ack(struct dmub_srv *dmub, uint32_t ti
                ack = dmub->hw_funcs.read_inbox0_ack_register(dmub);
                if (ack)
                        return DMUB_STATUS_OK;
+               udelay(1);
        }
        return DMUB_STATUS_TIMEOUT;
 }