Messages in this thread Patch in this message | | | From | Sebastian Hesselbarth <> | Subject | [PATCH] i2c: add sanity check to i2c_put_adapter | Date | Thu, 1 Aug 2013 14:10:46 +0200 |
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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.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> --- Cc: Wolfram Sang <wsa@the-dreams.de> Cc: linux-i2c@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/i2c/i2c-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index f32ca29..d075df6 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); -- 1.7.10.4
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