i2c: Make i2c_unregister_device() NULL-aware
It's a common pattern to be NULL-aware when freeing resources.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 7b08f34..706164b 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -819,6 +819,8 @@ EXPORT_SYMBOL_GPL(i2c_new_device);
*/
void i2c_unregister_device(struct i2c_client *client)
{
+ if (!client)
+ return;
if (client->dev.of_node)
of_node_clear_flag(client->dev.of_node, OF_POPULATED);
if (ACPI_COMPANION(&client->dev))
@@ -1436,8 +1438,7 @@ static int __unregister_client(struct device *dev, void *dummy)
static int __unregister_dummy(struct device *dev, void *dummy)
{
struct i2c_client *client = i2c_verify_client(dev);
- if (client)
- i2c_unregister_device(client);
+ i2c_unregister_device(client);
return 0;
}