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Blackfin SPI Driver: fix NULL pointer crash

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Fix NULL pointer crash when cleaning up from invalid platform resources

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Frysinger 2009-04-06 19:00:51 -07:00 committed by Linus Torvalds
parent 138f97cd06
commit e7d02e3c95
1 changed files with 3 additions and 0 deletions
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3
drivers/spi/spi_bfin5xx.c
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@ -1178,6 +1178,9 @@ static void bfin_spi_cleanup(struct spi_device *spi)
{
struct chip_data *chip = spi_get_ctldata(spi);
if (!chip)
return;
if ((chip->chip_select_num > 0)
&& (chip->chip_select_num <= spi->master->num_chipselect))
peripheral_free(ssel[spi->master->bus_num]