Messages in this thread Patch in this message | | | From | Bryan Wu <> | Subject | [PATCH 3/5] Blackfin SPI Driver: fix NULL pointer crash | Date | Thu, 5 Feb 2009 18:07:31 +0800 |
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From: Mike Frysinger <vapier.adi@gmail.com>
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> --- 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 ce24d5e..b6098b5 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -1240,6 +1240,9 @@ 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] -- 1.5.6.3
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