diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_ctrl.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_ctrl.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 139af85a8f2d..c569e97c82a6 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -1064,23 +1064,15 @@ static bool dp_ctrl_train_pattern_set(struct dp_ctrl_private *ctrl, static int dp_ctrl_read_link_status(struct dp_ctrl_private *ctrl, u8 *link_status) { - int len = 0; - u32 const offset = DP_LANE_ALIGN_STATUS_UPDATED - DP_LANE0_1_STATUS; - u32 link_status_read_max_retries = 100; - - while (--link_status_read_max_retries) { - len = drm_dp_dpcd_read_link_status(ctrl->aux, - link_status); - if (len != DP_LINK_STATUS_SIZE) { - DRM_ERROR("DP link status read failed, err: %d\n", len); - return len; - } + int ret = 0, len; - if (!(link_status[offset] & DP_LINK_STATUS_UPDATED)) - return 0; + len = drm_dp_dpcd_read_link_status(ctrl->aux, link_status); + if (len != DP_LINK_STATUS_SIZE) { + DRM_ERROR("DP link status read failed, err: %d\n", len); + ret = -EINVAL; } - return -ETIMEDOUT; + return ret; } static int dp_ctrl_link_train_1(struct dp_ctrl_private *ctrl, |