Pass mode to wait_on_atomic_t() action funcs and provide default actions
Make wait_on_atomic_t() pass the TASK_* mode onto its action function as an
extra argument and make it 'unsigned int throughout.
Also, consolidate a bunch of identical action functions into a default
function that can do the appropriate thing for the mode.
Also, change the argument name in the bit_wait*() function declarations to
reflect the fact that it's the mode and not the bit number.
[Peter Z gives this a grudging ACK, but thinks that the whole atomic_t wait
should be done differently, though he's not immediately sure as to how]
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
cc: Ingo Molnar <mingo@kernel.org>
diff --git a/drivers/gpu/drm/drm_dp_aux_dev.c b/drivers/gpu/drm/drm_dp_aux_dev.c
index d34e509..0530442 100644
--- a/drivers/gpu/drm/drm_dp_aux_dev.c
+++ b/drivers/gpu/drm/drm_dp_aux_dev.c
@@ -263,12 +263,6 @@ static struct drm_dp_aux_dev *drm_dp_aux_dev_get_by_aux(struct drm_dp_aux *aux)
return aux_dev;
}
-static int auxdev_wait_atomic_t(atomic_t *p)
-{
- schedule();
- return 0;
-}
-
void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
{
struct drm_dp_aux_dev *aux_dev;
@@ -283,7 +277,7 @@ void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
mutex_unlock(&aux_idr_mutex);
atomic_dec(&aux_dev->usecount);
- wait_on_atomic_t(&aux_dev->usecount, auxdev_wait_atomic_t,
+ wait_on_atomic_t(&aux_dev->usecount, atomic_t_wait,
TASK_UNINTERRUPTIBLE);
minor = aux_dev->index;