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disp: msm: dp: skip attention requests on disconnect

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Don't process any attention requests after hpd off. During automation
tests, scripts are doing a mst unplug after hpd off. But sometimes
disconnect thread freezes waiting for audio ack. During this freeze
unplug happens and uninstalls connector and free the panel and audio
objects due to which lock associated with completion variable causes an
exception.

Change-Id: I4038fd7debc383a96d60906eef17ec6e2163b326
Signed-off-by: Rajat Gupta <rajatgu@codeaurora.org>
This commit is contained in:
Rajat Gupta 2020-09-10 16:48:06 +05:30
commit 02ad85b541
1 changed files with 7 additions and 0 deletions
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7
msm/dp/dp_display.c
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@ -1437,6 +1437,12 @@ static void dp_display_attention_work(struct work_struct *work)
mutex_lock(&dp->session_lock);
SDE_EVT32_EXTERNAL(dp->state);
if (dp_display_state_is(DP_STATE_ABORTED)) {
DP_INFO("Hpd off, not handling any attention\n");
mutex_unlock(&dp->session_lock);
goto exit;
}
if (dp->debug->mst_hpd_sim || !dp_display_state_is(DP_STATE_READY)) {
mutex_unlock(&dp->session_lock);
goto mst_attention;
@ -1528,6 +1534,7 @@ cp_irq:
mst_attention:
dp_display_mst_attention(dp);
exit:
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT, dp->state);
}