6.8-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan+linaro@kernel.org
commit e86750b01a1560f198e4b3e21bb3f78bfd5bb2c3 upstream.
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 Patchwork: https://patchwork.freedesktop.org/patch/582746/ Link: https://lore.kernel.org/r/20240313164306.23133-3-johan+linaro@kernel.org Signed-off-by: Abhinav Kumar quic_abhinavk@quicinc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/msm/dp/dp_display.c | 1 + 1 file changed, 1 insertion(+)
--- 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_ 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; }