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| author | Mike Frysinger <vapier.adi@gmail.com> | 2009-04-06 19:00:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-07 08:31:06 -0700 |
| commit | e7d02e3c9577f070bc77354763bed7f24713dc53 (patch) | |
| tree | 7c6d62e9e9725c9147825ce131f831d82cff053f | |
| parent | 138f97cd06deddd53ad496ac1656917a7b486d24 (diff) | |
| download | blackbird-op-linux-e7d02e3c9577f070bc77354763bed7f24713dc53.tar.gz blackbird-op-linux-e7d02e3c9577f070bc77354763bed7f24713dc53.zip | |
Blackfin SPI Driver: fix NULL pointer crash
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>
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index d1ff34f3f6bd..53819c961a31 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -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] |
