| Message ID | 20240313164306.23133-3-johan+linaro@kernel.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | drm/msm/dp: fix runtime PM leaks on hotplug | expand |
On 3/13/2024 9:43 AM, Johan Hovold wrote: > Make sure to balance the runtime PM usage counter (and suspend) before > returning on connect failures (e.g. DPCD read failures after a spurious > connect event or if link training fails). > > Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver") > Cc: stable@vger.kernel.org # 6.8 > Cc: Kuogee Hsieh <quic_khsieh@quicinc.com> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 8e8cf531da45..78464c395c3d 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -598,6 +598,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) ret = dp_display_usbpd_configure_cb(&pdev->dev); if (ret) { /* link train failed */ dp->hpd_state = ST_DISCONNECTED; + pm_runtime_put_sync(&pdev->dev); } else { dp->hpd_state = ST_MAINLINK_READY; }
Make sure to balance the runtime PM usage counter (and suspend) before returning on connect failures (e.g. DPCD read failures after a spurious connect event or if link training fails). Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver") Cc: stable@vger.kernel.org # 6.8 Cc: Kuogee Hsieh <quic_khsieh@quicinc.com> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- drivers/gpu/drm/msm/dp/dp_display.c | 1 + 1 file changed, 1 insertion(+)