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| Rev 2071 | Rev 2218 | ||
|---|---|---|---|
| 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; |
|
| 63 | irq_t *irq = irq_dispatch_and_lock(inum); |
64 | irq_t *irq = irq_dispatch_and_lock(inum); |
| 64 | if (irq) { |
65 | if (irq) { |
| 65 | /* |
66 | /* |
| 66 | * The IRQ handler was found. |
67 | * The IRQ handler was found. |
| 67 | */ |
68 | */ |
| - | 69 | ||
| - | 70 | if (irq->preack) { |
|
| - | 71 | /* Acknowledge the interrupt before processing */ |
|
| - | 72 | pic_ack_interrupt(inum); |
|
| - | 73 | ack = true; |
|
| - | 74 | } |
|
| - | 75 | ||
| 68 | irq->handler(irq, irq->arg); |
76 | irq->handler(irq, irq->arg); |
| 69 | spinlock_unlock(&irq->lock); |
77 | spinlock_unlock(&irq->lock); |
| 70 | } else { |
78 | } else { |
| 71 | /* |
79 | /* |
| 72 | * Spurious interrupt. |
80 | * Spurious interrupt. |
| 73 | */ |
81 | */ |
| 74 | #ifdef CONFIG_DEBUG |
82 | #ifdef CONFIG_DEBUG |
| 75 | printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
83 | printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
| 76 | #endif |
84 | #endif |
| 77 | } |
85 | } |
| - | 86 | ||
| - | 87 | if (!ack) |
|
| 78 | pic_ack_interrupt(inum); |
88 | pic_ack_interrupt(inum); |
| 79 | } |
89 | } |
| 80 | } |
90 | } |
| 81 | 91 | ||
| 82 | 92 | ||
| 83 | static void exception_decrementer(int n, istate_t *istate) |
93 | static void exception_decrementer(int n, istate_t *istate) |