[PATCH 5.3 016/180] staging: vchiq: call unregister_chrdev_region() when driver registration fails

Greg Kroah-Hartman
2019-12-16T18:07:44Z

From: Marcelo Diop-Gonzalez <marcgonzalez@google.com>

commit d2cdb20507fe2079a146459f9718b45d78cbbe61 upstream.

This undoes the previous call to alloc_chrdev_region() on failure,
and is probably what was meant originally given the label name.

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
Cc: stable <stable@vger.kernel.org>
Fixes: 187ac53e590c ("staging: vchiq_arm: rework probe and init functions")
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20191203153921.70540-1-marcgonzalez@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -3300,7 +3300,7 @@ static int __init vchiq_driver_init(void
return 0;

region_unregister:
- platform_driver_unregister(&vchiq_driver);
+ unregister_chrdev_region(vchiq_devid, 1);

class_destroy:
class_destroy(vchiq_class);