| Message ID | 17cf60c9e5190ff83de40284bb858581bb0ec4a6.1619621413.git.mchehab+huawei@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Address some issues with PM runtime at media subsystem | expand |
On Wed, 28 Apr 2021 16:51:40 +0200 Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote: > The pm_runtime_get_sync() internally increments the > dev->power.usage_count without decrementing it, even on errors. > Replace it by the new pm_runtime_resume_and_get(), introduced by: > commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") > in order to properly decrement the usage counter and avoid memory > leaks. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c > index 3f81dd17755c..fbcca59a0517 100644 > --- a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c > +++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c > @@ -494,7 +494,7 @@ static int rotate_start_streaming(struct vb2_queue *vq, unsigned int count) > struct device *dev = ctx->dev->dev; > int ret; > > - ret = pm_runtime_get_sync(dev); > + ret = pm_runtime_resume_and_get(dev); > if (ret < 0) { > dev_err(dev, "Failed to enable module\n"); >
diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c index 3f81dd17755c..fbcca59a0517 100644 --- a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c +++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c @@ -494,7 +494,7 @@ static int rotate_start_streaming(struct vb2_queue *vq, unsigned int count) struct device *dev = ctx->dev->dev; int ret; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret < 0) { dev_err(dev, "Failed to enable module\n");
The pm_runtime_get_sync() internally increments the dev->power.usage_count without decrementing it, even on errors. Replace it by the new pm_runtime_resume_and_get(), introduced by: commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") in order to properly decrement the usage counter and avoid memory leaks. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> --- drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)