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poll: fix deadlock

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Matheus
2024-04-20 15:47:00 -03:00
parent d10de37498
commit 257eddc9d5
1 changed files with 2 additions and 2 deletions
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kernel-src/io/poll.c
+2 -2
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@@ -140,12 +140,12 @@ void poll_event(pollheader_t *header, int events) {
spinlock_acquire(&desc->eventlock); spinlock_acquire(&desc->eventlock);
int revents = iterator->events & events; int revents = iterator->events & events;
if (spinlock_try(&desc->lock) == false || spinlock_try(&desc->wakeuplock) == false) { if (revents == 0 || spinlock_try(&desc->lock) == false || spinlock_try(&desc->wakeuplock) == false) {
removefromlist(&pending, iterator); removefromlist(&pending, iterator);
insertinheader(header, iterator); insertinheader(header, iterator);
} }
if (revents && desc->event == NULL) { if (desc->event == NULL) {
iterator->revents = revents; iterator->revents = revents;
desc->event = iterator; desc->event = iterator;
} }