diff options
| author | Padmanabhan Komanduru <pkomandu@codeaurora.org> | 2017-07-03 12:56:56 +0530 |
|---|---|---|
| committer | Padmanabhan Komanduru <pkomandu@codeaurora.org> | 2017-07-03 12:57:33 +0530 |
| commit | 3071be2987f4bf3ac5e17c919160cf196dcfb3c3 (patch) | |
| tree | bcdedd01a01702eac317cde5ff94e7b8bea30bf7 /drivers/video/fbdev | |
| parent | bc399a65c4e048d98b6304272e32402bfca59dda (diff) | |
mdss: dp: avoid notifying DP connect during AUX timeout cases
In case the DPCD read transaction continuously times out, it is
likely that the sink is not responding or the DP cable/dongle is
faulty and hence no response is seen. In such cases, avoid
reporting the DP connect event to userspace.
Change-Id: Ie07de464f63dc3b18c875a061a18ad00e4c99e85
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
Diffstat (limited to 'drivers/video/fbdev')
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dp.c b/drivers/video/fbdev/msm/mdss_dp.c index c8afb3a244c3..2f169074261a 100644 --- a/drivers/video/fbdev/msm/mdss_dp.c +++ b/drivers/video/fbdev/msm/mdss_dp.c @@ -2176,6 +2176,10 @@ static int mdss_dp_process_hpd_high(struct mdss_dp_drv_pdata *dp) ret = mdss_dp_dpcd_cap_read(dp); if (ret || !mdss_dp_aux_is_link_rate_valid(dp->dpcd.max_link_rate) || !mdss_dp_aux_is_lane_count_valid(dp->dpcd.max_lane_count)) { + if (ret == EDP_AUX_ERR_TOUT) { + pr_err("DPCD read timedout, skip connect notification\n"); + goto end; + } /* * If there is an error in parsing DPCD or if DPCD reports * unsupported link parameters then set the default link |