On 2021/05/31 18:54, Robert Foss wrote:
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.
Hi, I just resubmit v2 patch. Thanks Yu Kuai
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.
