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Commit cd8dd41a authored by Sascha Hauer's avatar Sascha Hauer Committed by Mark Brown
Browse files

spi: imx: Fix possible NULL pointer deref 



transfer could be NULL in spi_imx_can_dma() when it's called from
spi_imx_setupxfer() with a NULL transfer. Test for a NULL pointer before
dereferencing it.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 793c7f92

drivers/spi/spi-imx.c

+5 −1
Original line number Diff line number Diff line
@@ -211,11 +211,15 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi, 
			 struct spi_transfer *transfer)

{

	struct spi_imx_data *spi_imx = spi_master_get_devdata(master);

	unsigned int bpw = transfer->bits_per_word;

	unsigned int bpw;



	if (!master->dma_rx)

		return false;



	if (!transfer)

		return false;



	bpw = transfer->bits_per_word;

	if (!bpw)

		bpw = spi->bits_per_word;