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authorIngo Molnar <mingo@elte.hu>2009-06-07 11:34:59 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-07 11:35:05 +0200
commit56fdd18c7b89a2fac1dfe5d54750c9143867fdc4 (patch)
treece48eee7d5960936fa6e385320b7a261a8bee071 /drivers/base/driver.c
parent7caf6a49bb17d0377210693af5737563b31aa5ee (diff)
parentb87297fb405ef13cac375f202d114323b076a56d (diff)
Merge branch 'linus' into core/iommu
Merge reason: This branch was on an -rc5 base so pull almost-2.6.30 to resync with the latest upstream fixes and make sure the combination works fine. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/base/driver.c')
-rw-r--r--drivers/base/driver.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index c51f11bb29a..8ae0f63602e 100644
--- 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);
}