Hi Qiushi, (CC'ing Rafael and Geert)
Thank you for the patch. On Sat, Jun 13, 2020 at 06:23:57PM -0500, [email protected] wrote: > From: Qiushi Wu <[email protected]> > > pm_runtime_get_sync() increments the runtime PM usage counter even > when it returns an error code, causing incorrect ref count if > pm_runtime_put_noidle() is not called in error handling paths. > Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails. > > Fixes: 1e6af546ee66 ("[media] v4l: vsp1: Implement runtime PM support") > Signed-off-by: Qiushi Wu <[email protected]> https://lore.kernel.org/dri-devel/[email protected]/ I really wonder if mass-patching all drivers is the best way forward. > --- > drivers/media/platform/vsp1/vsp1_drv.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/media/platform/vsp1/vsp1_drv.c > b/drivers/media/platform/vsp1/vsp1_drv.c > index c650e45bb0ad..222c9e1261a0 100644 > --- a/drivers/media/platform/vsp1/vsp1_drv.c > +++ b/drivers/media/platform/vsp1/vsp1_drv.c > @@ -846,8 +846,10 @@ static int vsp1_probe(struct platform_device *pdev) > pm_runtime_enable(&pdev->dev); > > ret = pm_runtime_get_sync(&pdev->dev); > - if (ret < 0) > + if (ret < 0) { > + pm_runtime_put_noidle(&pdev->dev); > goto done; > + } > > vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION); > pm_runtime_put_sync(&pdev->dev); -- Regards, Laurent Pinchart
