From mboxrd@z Thu Jan 1 00:00:00 1970 From: cedric.madianga@gmail.com (M'boumba Cedric Madianga) Date: Tue, 24 Nov 2015 09:52:35 +0100 Subject: [PATCH] dmaengine: stm32-dma: Fix static checker warning Message-ID: <1448355155-31283-1-git-send-email-cedric.madianga@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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