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Driver Core: do not oops when driver_unregister() is called for unregistered drivers
[sfrench/cifs-2.6.git]
/
drivers
/
base
/
driver.c
diff --git
a/drivers/base/driver.c
b/drivers/base/driver.c
index c51f11bb29ae2bdd0a13077147e6db357da8be27..8ae0f63602e0730a71647cb571cbf933d76ceec8 100644
(file)
--- a/
drivers/base/driver.c
+++ b/
drivers/base/driver.c
@@
-257,6
+257,10
@@
EXPORT_SYMBOL_GPL(driver_register);
*/
void driver_unregister(struct device_driver *drv)
{
+ if (!drv || !drv->p) {
+ WARN(1, "Unexpected driver unregister!\n");
+ return;
+ }
driver_remove_groups(drv, drv->groups);
bus_remove_driver(drv);
}