From 1bc39ac5dab265b76ce6e20d6c85f900539fd190 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 10 Mar 2012 11:32:34 +0000 Subject: ARM: PCI: versatile: fix PCI interrupt setup This is at odds with the documentation in the file; it says pin 1 on slots 24,25,26,27 map to IRQs 27,28,29,30, but the function will always be entered with slot=0 due to the lack of swizzle function. Fix this function to behave as the comments say, and use the standard PCI swizzle. Signed-off-by: Russell King --- arch/arm/mach-versatile/pci.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-versatile/pci.c b/arch/arm/mach-versatile/pci.c index d2268be8c34..24dd4b1490b 100644 --- a/arch/arm/mach-versatile/pci.c +++ b/arch/arm/mach-versatile/pci.c @@ -339,15 +339,13 @@ static int __init versatile_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) * 26 1 29 * 27 1 30 */ - irq = 27 + ((slot + pin - 1) & 3); - - printk("PCI map irq: slot %d, pin %d, devslot %d, irq: %d\n",slot,pin,devslot,irq); + irq = 27 + ((slot - 24 + pin - 1) & 3); return irq; } static struct hw_pci versatile_pci __initdata = { - .swizzle = NULL, + .swizzle = pci_std_swizzle, .map_irq = versatile_map_irq, .nr_controllers = 1, .setup = pci_versatile_setup, -- cgit v1.2.3-70-g09d2