macintosh: Don't assume i2c device probing always succeeds
If i2c device probing fails, then there is no driver to dereference
after calling i2c_new_device(). Stop assuming that probing will always
succeed, to avoid NULL pointer dereferences. We have an easier access
to the driver anyway.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Tim Shepard <shep@alum.mit.edu>
Cc: Colin Leroy <colin@colino.net>
diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c
index 5da729e..e20330a 100644
--- a/drivers/macintosh/windfarm_smu_sat.c
+++ b/drivers/macintosh/windfarm_smu_sat.c
@@ -194,6 +194,8 @@
.owner = THIS_MODULE,
};
+static struct i2c_driver wf_sat_driver;
+
static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
{
struct i2c_board_info info;
@@ -222,7 +224,7 @@
* Let i2c-core delete that device on driver removal.
* This is safe because i2c-core holds the core_lock mutex for us.
*/
- list_add_tail(&client->detected, &client->driver->clients);
+ list_add_tail(&client->detected, &wf_sat_driver.clients);
}
static int wf_sat_probe(struct i2c_client *client,
