evie/android_kernel_oneplus_msm8998
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msm: mdss: dp: fix handling of link training mutex

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Remove the additional unbalanced unlock being called for the
link training mutex. This fixes random crashes seen while
running Display Port connection/disconnection tests.

Change-Id: I2fce80cec72e3bd8b1561fd46fa1a1520cddd294
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
This commit is contained in:
Aravind Venkateswaran 2016-12-15 17:41:04 -08:00 • committed by Gerrit - the friendly Code Review server
parent c23be78397
commit 5f41a670d1
1 changed files with 6 additions and 3 deletions
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9
drivers/video/fbdev/msm/mdss_dp.c
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@ -1211,16 +1211,20 @@ static int mdss_dp_on_irq(struct mdss_dp_drv_pdata *dp_drv)
ret = mdss_dp_get_lane_mapping(dp_drv, dp_drv->orientation,
&ln_map);
if (ret)
if (ret) {
mutex_unlock(&dp_drv->train_mutex);
goto exit;
}
mdss_dp_phy_share_lane_config(&dp_drv->phy_io,
dp_drv->orientation,
dp_drv->dpcd.max_lane_count);
ret = mdss_dp_enable_mainlink_clocks(dp_drv);
if (ret)
if (ret) {
mutex_unlock(&dp_drv->train_mutex);
goto exit;
}
mdss_dp_mainlink_reset(&dp_drv->ctrl_io);
@ -1238,7 +1242,6 @@ static int mdss_dp_on_irq(struct mdss_dp_drv_pdata *dp_drv)
pr_debug("end\n");
exit:
mutex_unlock(&dp_drv->train_mutex);
return ret;
}