4.4-stable review patch. If anyone has any objections, please let me know.
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From: Tobias Jordan Tobias.Jordan@elektrobit.com
[ Upstream commit eb9436966fdc84cebdf222952a99898ab46d9bb0 ]
in error path of jz4740_dma_probe(), call clk_disable_unprepare() to clean up.
Found by Linux Driver Verification project (linuxtesting.org).
Fixes: 25ce6c35fea0 MIPS: jz4740: Remove custom DMA API Signed-off-by: Tobias Jordan Tobias.Jordan@elektrobit.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/dma-jz4740.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/dma/dma-jz4740.c +++ b/drivers/dma/dma-jz4740.c @@ -557,7 +557,7 @@ static int jz4740_dma_probe(struct platf
ret = dma_async_device_register(dd); if (ret) - return ret; + goto err_clk;
irq = platform_get_irq(pdev, 0); ret = request_irq(irq, jz4740_dma_irq, 0, dev_name(&pdev->dev), dmadev); @@ -570,6 +570,8 @@ static int jz4740_dma_probe(struct platf
err_unregister: dma_async_device_unregister(dd); +err_clk: + clk_disable_unprepare(dmadev->clk); return ret; }