[RFC PATCH 1/7] i2c: add sanity check for parameter of i2c_verify_client()

Wolfram Sang
2020-02-20T17:25:56Z

We export this function, so we should check the paramter to make it
NULL-compatible.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
drivers/i2c/i2c-core-base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index cefad0881942..8f46d1bb8c62 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -517,7 +517,7 @@ EXPORT_SYMBOL_GPL(i2c_client_type);
*/
struct i2c_client *i2c_verify_client(struct device *dev)
{
- return (dev->type == &i2c_client_type)
+ return (dev && dev->type == &i2c_client_type)
? to_i2c_client(dev)
: NULL;
}
--
2.20.1