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lkl: irq: atomically drain pending IRQs #640

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Merged
tavip merged 1 commit into from
Jun 14, 2026
Merged

lkl: irq: atomically drain pending IRQs #640

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10 changes: 5 additions & 5 deletions arch/lkl/kernel/irq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -27,15 +27,11 @@ static unsigned long irq_index_status;

static inline unsigned long test_and_clear_irq_index_status(void)
{
if (!irq_index_status)
return 0;
return __sync_fetch_and_and(&irq_index_status, 0);
}

static inline unsigned long test_and_clear_irq_status(int index)
{
if (!irq_status[index])
return 0;
return __sync_fetch_and_and(&irq_status[index], 0);
}

Expand Down Expand Up @@ -128,7 +124,11 @@ static inline void check_irq_status(int i, int unused)

void run_irqs(void)
{
for_each_bit(test_and_clear_irq_index_status(), check_irq_status, 0);
unsigned long pending;

/* Drain IRQs published while earlier pending IRQs are being handled. */
while ((pending = test_and_clear_irq_index_status()))
for_each_bit(pending, check_irq_status, 0);
}

int show_interrupts(struct seq_file *p, void *v)
Expand Down
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