Messages in this thread Patch in this message | | | From | M'boumba Cedric Madianga <> | Subject | [PATCH] dmaengine: stm32-dma: Fix static checker warning | Date | Tue, 24 Nov 2015 09:52:35 +0100 |
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This patch fix an unchecked dereference warning by returning operation not permitted when stm32_dma_start_transfer() does not succeed to allocate a virtual channel descriptor.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> --- drivers/dma/stm32-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index 12f3a3e..0214bcf 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -437,7 +437,7 @@ static int stm32_dma_start_transfer(struct stm32_dma_chan *chan) if (!chan->desc) { vdesc = vchan_next_desc(&chan->vchan); if (!vdesc) - return 0; + return -EPERM; chan->desc = to_stm32_dma_desc(vdesc); chan->next_sg = 0; -- 1.9.1
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