diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-19 20:12:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-19 20:12:24 +0100 |
| commit | f779b7dd3259ec138c7aba793f0602b20262af83 (patch) | |
| tree | 7ed94961b196c81fcd413e2b04d1e6945d6d227a /block | |
| parent | 3c00079b31f910309b30ed5c2fd2b7a2d86bba60 (diff) | |
| parent | fe0cdec8bad919fd91cd344123906a55f3857209 (diff) | |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Conflicts:
arch/arm/mach-at91/include/mach/system.h
arch/arm/mach-imx/mach-cpuimx27.c
AT91 conflict resolution:
Acked-by: Anders Larsen <al@alarsen.net>
IMX conflict resolution confirmed by Uwe Kleine-König.
Diffstat (limited to 'block')
| -rw-r--r-- | block/elevator.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/block/elevator.c b/block/elevator.c index 205b09a5bd9e..4e11559aa2b0 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -938,6 +938,7 @@ int elv_register_queue(struct request_queue *q) } } kobject_uevent(&e->kobj, KOBJ_ADD); + e->registered = 1; } return error; } @@ -947,6 +948,7 @@ static void __elv_unregister_queue(struct elevator_queue *e) { kobject_uevent(&e->kobj, KOBJ_REMOVE); kobject_del(&e->kobj); + e->registered = 0; } void elv_unregister_queue(struct request_queue *q) @@ -1042,11 +1044,13 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e) spin_unlock_irq(q->queue_lock); - __elv_unregister_queue(old_elevator); + if (old_elevator->registered) { + __elv_unregister_queue(old_elevator); - err = elv_register_queue(q); - if (err) - goto fail_register; + err = elv_register_queue(q); + if (err) + goto fail_register; + } /* * finally exit old elevator and turn off BYPASS. |