diff options
Diffstat (limited to 'arch/x86/cpu/sc520/sc520_pci.c')
| -rw-r--r-- | arch/x86/cpu/sc520/sc520_pci.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/x86/cpu/sc520/sc520_pci.c b/arch/x86/cpu/sc520/sc520_pci.c index e26793ab1b..a13798f1f7 100644 --- a/arch/x86/cpu/sc520/sc520_pci.c +++ b/arch/x86/cpu/sc520/sc520_pci.c @@ -70,26 +70,28 @@ int pci_sc520_set_irq(int pci_pin, int irq) debug("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq); - if (irq < 0 || irq > 15) { + if (irq < 0 || irq > 15) return -1; /* illegal irq */ - } - if (pci_pin < 0 || pci_pin > 15) { + if (pci_pin < 0 || pci_pin > 15) return -1; /* illegal pci int pin */ - } /* first disable any non-pci interrupt source that use * this level */ /* PCI interrupt mapping (A through D)*/ - for (i=0; i<=3 ;i++) { - if (readb(&sc520_mmcr->pci_int_map[i]) == sc520_irq[irq].priority) + for (i = 0; i <= 3 ; i++) { + tmpb = readb(&sc520_mmcr->pci_int_map[i]); + + if (tmpb == sc520_irq[irq].priority) writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pci_int_map[i]); } /* GP IRQ interrupt mapping */ - for (i=0; i<=10 ;i++) { - if (readb(&sc520_mmcr->gp_int_map[i]) == sc520_irq[irq].priority) + for (i = 0; i <= 10 ; i++) { + tmpb = readb(&sc520_mmcr->gp_int_map[i]); + + if (tmpb == sc520_irq[irq].priority) writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_int_map[i]); } @@ -102,10 +104,12 @@ int pci_sc520_set_irq(int pci_pin, int irq) if (pci_pin < 4) { /* PCI INTA-INTD */ /* route the interrupt */ - writeb(sc520_irq[irq].priority, &sc520_mmcr->pci_int_map[pci_pin]); + writeb(sc520_irq[irq].priority, + &sc520_mmcr->pci_int_map[pci_pin]); } else { /* GPIRQ0-GPIRQ10 used for additional PCI INTS */ - writeb(sc520_irq[irq].priority, &sc520_mmcr->gp_int_map[pci_pin - 4]); + writeb(sc520_irq[irq].priority, + &sc520_mmcr->gp_int_map[pci_pin - 4]); /* also set the polarity in this case */ tmpw = readw(&sc520_mmcr->intpinpol); |
