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Commit e7d02e3c authored by Mike Frysinger's avatar Mike Frysinger Committed by Linus Torvalds
Browse files

Blackfin SPI Driver: fix NULL pointer crash 



Fix NULL pointer crash when cleaning up from invalid platform resources

Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 138f97cd

drivers/spi/spi_bfin5xx.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -1178,6 +1178,9 @@ static void bfin_spi_cleanup(struct spi_device *spi) 
{

{

	struct chip_data *chip = spi_get_ctldata(spi);

	struct chip_data *chip = spi_get_ctldata(spi);





	if (!chip)

		return;



	if ((chip->chip_select_num > 0)

	if ((chip->chip_select_num > 0)

		&& (chip->chip_select_num <= spi->master->num_chipselect))

		&& (chip->chip_select_num <= spi->master->num_chipselect))

		peripheral_free(ssel[spi->master->bus_num]

		peripheral_free(ssel[spi->master->bus_num]