Hey Yu,
I'm not finding your this patch with the correct tags. I'd expect the subject:
[PATCH v2] drm: bridge: cdns-mhdp8546: Fix PM reference leak in
cdns_mhdp_probe()
Can you please resubmit using this title, just to be sure I merge the
right version of this code.
On Sat, 29 May 2021 at 11:46, Yu Kuai <yukuai3@xxxxxxxxxx> wrote:
>
> pm_runtime_get_sync will increment pm usage counter even it failed.
> Forgetting to putting operation will result in reference leak here.
> Fix it by replacing it with pm_runtime_resume_and_get to keep usage
> counter balanced.
>
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
> ---
> changes in V2:
> - change error message.
>
> drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
> index 0cd8f40fb690..eab959a59214 100644
> --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
> +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
> @@ -2478,9 +2478,9 @@ static int cdns_mhdp_probe(struct platform_device *pdev)
> clk_prepare_enable(clk);
>
> pm_runtime_enable(dev);
> - ret = pm_runtime_get_sync(dev);
> + ret = pm_runtime_resume_and_get(dev);
> if (ret < 0) {
> - dev_err(dev, "pm_runtime_get_sync failed\n");
> + dev_err(dev, "pm_runtime_resume_and_get failed\n");
> pm_runtime_disable(dev);
> goto clk_disable;
> }
> --
> 2.25.4
>
