Before this patch, cancelled waiters would only be cleaned up once their threshold value was reached. Make host1x_intr_put_ref process the cancellation immediately to fix this.
Signed-off-by: Mikko Perttunen mperttunen@nvidia.com --- drivers/gpu/host1x/intr.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/host1x/intr.c b/drivers/gpu/host1x/intr.c index 9245add23b5d..5d328d20ce6d 100644 --- a/drivers/gpu/host1x/intr.c +++ b/drivers/gpu/host1x/intr.c @@ -247,13 +247,17 @@ void host1x_intr_put_ref(struct host1x *host, unsigned int id, void *ref) struct host1x_waitlist *waiter = ref; struct host1x_syncpt *syncpt;
- while (atomic_cmpxchg(&waiter->state, WLS_PENDING, WLS_CANCELLED) == - WLS_REMOVED) - schedule(); + atomic_cmpxchg(&waiter->state, WLS_PENDING, WLS_CANCELLED);
syncpt = host->syncpt + id; - (void)process_wait_list(host, syncpt, - host1x_syncpt_load(host->syncpt + id)); + + spin_lock(&syncpt->intr.lock); + if (atomic_cmpxchg(&waiter->state, WLS_CANCELLED, WLS_HANDLED) == + WLS_CANCELLED) { + list_del(&waiter->list); + kref_put(&waiter->refcount, waiter_release); + } + spin_unlock(&syncpt->intr.lock);
kref_put(&waiter->refcount, waiter_release); }