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| Rev 2265 | Rev 2292 | ||
|---|---|---|---|
| Line 58... | Line 58... | ||
| 58 | static void exception_external(int n, istate_t *istate) |
58 | static void exception_external(int n, istate_t *istate) |
| 59 | { |
59 | { |
| 60 | int inum; |
60 | int inum; |
| 61 | 61 | ||
| 62 | while ((inum = pic_get_pending()) != -1) { |
62 | while ((inum = pic_get_pending()) != -1) { |
| 63 | bool ack = false; |
- | |
| 64 | irq_t *irq = irq_dispatch_and_lock(inum); |
63 | irq_t *irq = irq_dispatch_and_lock(inum); |
| 65 | if (irq) { |
64 | if (irq) { |
| 66 | /* |
65 | /* |
| 67 | * The IRQ handler was found. |
66 | * The IRQ handler was found. |
| 68 | */ |
67 | */ |
| 69 | - | ||
| 70 | if (irq->preack) { |
- | |
| 71 | /* Acknowledge the interrupt before processing */ |
- | |
| 72 | pic_ack_interrupt(inum); |
- | |
| 73 | ack = true; |
- | |
| 74 | } |
- | |
| 75 | - | ||
| 76 | irq->handler(irq, irq->arg); |
68 | irq->handler(irq, irq->arg); |
| 77 | spinlock_unlock(&irq->lock); |
69 | spinlock_unlock(&irq->lock); |
| 78 | } else { |
70 | } else { |
| 79 | /* |
71 | /* |
| 80 | * Spurious interrupt. |
72 | * Spurious interrupt. |
| 81 | */ |
73 | */ |
| 82 | #ifdef CONFIG_DEBUG |
74 | #ifdef CONFIG_DEBUG |
| 83 | printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
75 | printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
| 84 | #endif |
76 | #endif |
| 85 | } |
77 | } |
| 86 | - | ||
| 87 | if (!ack) |
- | |
| 88 | pic_ack_interrupt(inum); |
78 | pic_ack_interrupt(inum); |
| 89 | } |
79 | } |
| 90 | } |
80 | } |
| 91 | 81 | ||
| 92 | 82 | ||