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dmaengine: mv_xor: Fix a missing check in mv_xor_channel_add 

dma_async_device_register() may fail and return an error. The capabilities
checked in mv_xor_channel_add() are not complete. The fix handles the
error by freeing the resources.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Aditya Pakki 2018-12-24 11:41:54 -06:00 committed by Vinod Koul
parent bfeffd1552
commit 7c97381e7a
1 changed files with 4 additions and 1 deletions
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5
drivers/dma/mv_xor.c
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@ -1153,7 +1153,10 @@ mv_xor_channel_add(struct mv_xor_device *xordev,
dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask) ? "cpy " : "",
dma_has_cap(DMA_INTERRUPT, dma_dev->cap_mask) ? "intr " : "");
dma_async_device_register(dma_dev);
ret = dma_async_device_register(dma_dev);
if (ret)
goto err_free_irq;
return mv_chan;
err_free_irq: