| Message ID | 1622443515-55117-1-git-send-email-zou_wei@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | d54db74ad6e0dea8c253fb68c689b836657ab914 |
| Headers | show |
| Series | [-next] dmaengine: stm32-dma: fix PM reference leak in stm32_dma_alloc_chan_resource() | expand |
diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index f54ecb1..7dd1d3d 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -1200,7 +1200,7 @@ static int stm32_dma_alloc_chan_resources(struct dma_chan *c) chan->config_init = false; - ret = pm_runtime_get_sync(dmadev->ddev.dev); + ret = pm_runtime_resume_and_get(dmadev->ddev.dev); if (ret < 0) return ret; @@ -1470,7 +1470,7 @@ static int stm32_dma_suspend(struct device *dev) struct stm32_dma_device *dmadev = dev_get_drvdata(dev); int id, ret, scr; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret < 0) return ret;
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@huawei.com> Signed-off-by: Zou Wei <zou_wei@huawei.com> --- drivers/dma/stm32-dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)