diff options
| author | Xiaowen Wu <wxiaowen@codeaurora.org> | 2020-07-27 22:18:59 -0400 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2020-09-10 20:47:09 -0700 |
| commit | a6679cf917d70a83e391b65bde563c51a3e76224 (patch) | |
| tree | a72dd6d38eb34fc043b3f78ed2d2ca1bdaed96b8 /msm/dp/dp_display.c | |
| parent | 3c3bfb63cb2a56e1fd5f277a3e6ee76042736ac3 (diff) | |
| download | display-drivers-a6679cf917d70a83e391b65bde563c51a3e76224.tar.gz | |
disp: msm: dp: fix dp-mst stream double disabled issue
There is a corner case when dp-mst stream is disabled twice:
1. stream 1 is enabled
2. cable plugged out, stream 1 is disabled by kernel
3. cable plugged in, enable stream 0 first
4. disable stream 1
Stream 1 is double disabled and will cause hw crash. This change
will add the check and skip stream_off if already disabled.
Change-Id: Icd1e815a1ed14cd4e784924f3db19b98eb06d571
Signed-off-by: Xiaowen Wu <wxiaowen@codeaurora.org>
Signed-off-by: Sankeerth Billakanti <sbillaka@codeaurora.org>
Diffstat (limited to 'msm/dp/dp_display.c')
| -rw-r--r-- | msm/dp/dp_display.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/msm/dp/dp_display.c b/msm/dp/dp_display.c index 4823fe2e..56f2723f 100644 --- a/msm/dp/dp_display.c +++ b/msm/dp/dp_display.c @@ -1167,6 +1167,12 @@ static void dp_display_stream_disable(struct dp_display_private *dp, return; } + if (dp_panel->stream_id == DP_STREAM_MAX || + !dp->active_panels[dp_panel->stream_id]) { + DP_ERR("panel is already disabled\n"); + return; + } + DP_DEBUG("stream_id=%d, active_stream_cnt=%d\n", dp_panel->stream_id, dp->active_stream_cnt); |