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authorRabin Vincent <rabin@rab.in>2009-04-05 13:30:53 +0530
committerAndy Fleming <afleming@freescale.com>2009-06-02 17:18:56 -0500
commite85649c7e683faea1ccfddc9fa9abc62f38e4201 (patch)
treeee1f5c96aba8a19b2567d0f542e787f81a1f13f1 /drivers
parentac0865ff33870cdf2cd480165045e1bc311e9fa2 (diff)
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mmc: check find_mmc_device return value
find_mmc_device returns NULL if an invalid device number is specified. Check for this to avoid dereferencing NULL pointers. Signed-off-by: Rabin Vincent <rabin@rab.in>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/mmc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 7791c38..70b4130 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -846,7 +846,7 @@ block_dev_desc_t *mmc_get_dev(int dev)
{
struct mmc *mmc = find_mmc_device(dev);
- return &mmc->block_dev;
+ return mmc ? &mmc->block_dev : NULL;
}
int mmc_init(struct mmc *mmc)