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keyboard: fix poll

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Matheus
2024-05-03 15:14:49 -03:00
parent bff2e26274
commit 2930506e59
1 changed files with 5 additions and 4 deletions
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kernel-src/io/keyboard.c
+4 -3
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@@ -190,12 +190,10 @@ static int poll(int minor, polldata_t *data, int events) {
if (kb == NULL) if (kb == NULL)
return POLLERR; return POLLERR;
if (events & POLLIN) {
long ipl = interrupt_raiseipl(IPL_KEYBOARD); long ipl = interrupt_raiseipl(IPL_KEYBOARD);
spinlock_acquire(&kb->lock); spinlock_acquire(&kb->lock);
if (events & POLLIN) {
size_t dataleft = RINGBUFFER_DATACOUNT(&kb->packetbuffer); size_t dataleft = RINGBUFFER_DATACOUNT(&kb->packetbuffer);
spinlock_release(&kb->lock);
interrupt_loweripl(ipl);
if (dataleft) if (dataleft)
revents |= POLLIN; revents |= POLLIN;
} }
@@ -203,6 +201,9 @@ static int poll(int minor, polldata_t *data, int events) {
if (revents == 0 && data) if (revents == 0 && data)
poll_add(&kb->pollheader, data, events); poll_add(&kb->pollheader, data, events);
spinlock_release(&kb->lock);
interrupt_loweripl(ipl);
return revents; return revents;
} }