diff options
| author | Dinghao Liu <dinghao.liu@zju.edu.cn> | 2020-06-24 14:46:26 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-06-24 15:11:39 +0530 |
| commit | 5b78fac4b1ba731cf4177fdbc1e3a4661521bcd0 (patch) | |
| tree | b7cd13542047172f457b17118ad1cdfe64ff3737 | |
| parent | 8995aa3d164ddd9200e6abcf25c449cf5298c858 (diff) | |
dmaengine: tegra210-adma: Fix runtime PM imbalance on error
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20200624064626.19855-1-dinghao.liu@zju.edu.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/tegra210-adma.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index db58d7e4f9fe..c5fa2ef74abc 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -658,6 +658,7 @@ static int tegra_adma_alloc_chan_resources(struct dma_chan *dc) ret = pm_runtime_get_sync(tdc2dev(tdc)); if (ret < 0) { + pm_runtime_put_noidle(tdc2dev(tdc)); free_irq(tdc->irq, tdc); return ret; } @@ -869,8 +870,10 @@ static int tegra_adma_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 rpm_disable; + } ret = tegra_adma_init(tdma); if (ret) |