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authorSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>2013-08-01 14:10:46 +0200
committerWolfram Sang <wsa@the-dreams.de>2013-08-07 17:06:26 +0200
commitc66c4cc087eb1f5307f6391e467797227aed758a (patch)
tree3dd599cd11bc0b3d7bafad2212d55113080c904e /drivers/i2c/i2c-core.c
parent3923172b3d700486c1ca24df9c4c5405a83e2309 (diff)
downloadlinux-c66c4cc087eb1f5307f6391e467797227aed758a.tar.bz2
i2c: add sanity check to i2c_put_adapter
i2c_put_adapter dereferences i2c_adapter pointer passed without check for NULL. This adds a check for non-NULL pointer to allow i2c_put_adapter called with NULL and behave the same way i2c_release_client does already. It allows to simplify drivers where you need to release the adapter during probe failures. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-core.c')
-rw-r--r--drivers/i2c/i2c-core.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index f32ca293ae0e..d075df641c2c 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1825,7 +1825,8 @@ EXPORT_SYMBOL(i2c_get_adapter);
void i2c_put_adapter(struct i2c_adapter *adap)
{
- module_put(adap->owner);
+ if (adap)
+ module_put(adap->owner);
}
EXPORT_SYMBOL(i2c_put_adapter);