Rev 2071 | Rev 3022 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
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 |