Messages in this thread Patch in this message | | | Date | Mon, 22 May 2017 19:25:07 -0500 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH] spi: add null check before pointer dereference |
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Add null check before dereferencing pointer desc
Addresses-Coverity-ID: 1397997 Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> --- drivers/spi/spi-s3c64xx.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index b392cca..9f1013e 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -306,6 +306,12 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, desc = dmaengine_prep_slave_sg(dma->ch, sgt->sgl, sgt->nents, dma->direction, DMA_PREP_INTERRUPT); + if (!desc) { + dev_err(&sdd->master->dev, + "%s:dmaengine_prep_slave_sg Failed\n", __func__); + return; + } + desc->callback = s3c64xx_spi_dmacb; desc->callback_param = dma; -- 2.5.0
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