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/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index a028598..ea32c7e 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -286,6 +286,8 @@
},
};
+static struct i2c_driver therm_pm72_driver;
+
/*
* Utility function to create an i2c_client structure and
* attach it to one of u3 adapters
@@ -318,7 +320,7 @@
* 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(&clt->detected, &clt->driver->clients);
+ list_add_tail(&clt->detected, &therm_pm72_driver.clients);
return clt;
}