Commit 6ea438ec authored Jul 14, 2008 by David Brownell Committed by Jean Delvare Jul 14, 2008

i2c: i2c_use_client() defends against NULL



Defend the i2c refcount calls against NULL pointers, as is important
(and conventional) for such calls.  Note that none of the current
callers of i2c_use_client() use its return value.

[JD: I hate this but apparently all the other subsystems do it so...]

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

parent a1cdedac

drivers/i2c/i2c-core.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -866,8 +866,9 @@ EXPORT_SYMBOL(i2c_detach_client);
		*/
		struct i2c_client i2c_use_client(struct i2c_client client)
		{
		get_device(&client->dev);
		if (client && get_device(&client->dev))
		return client;
		return NULL;
		}
		EXPORT_SYMBOL(i2c_use_client);

		@@ -879,6 +880,7 @@ EXPORT_SYMBOL(i2c_use_client);
		*/
		void i2c_release_client(struct i2c_client *client)
		{
		if (client)
		put_device(&client->dev);
		}
		EXPORT_SYMBOL(i2c_release_client);