From: Dinghao Liu dinghao.liu@zju.edu.cn
[ Upstream commit 5b78fac4b1ba731cf4177fdbc1e3a4661521bcd0 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/tegra210-adma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index c16c06b3dd2f4..54296e262deab 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -583,6 +583,7 @@ 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; } @@ -764,8 +765,10 @@ 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)