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authorDavid Woodhouse <dwmw2@infradead.org>2005-11-05 17:54:22 +0000
committerPaul Mackerras <paulus@samba.org>2005-11-07 12:36:25 +1100
commit9d2ba6faa1c2e10546a4bdf0f9687436d7681b2f (patch)
tree47d6fd707ea6b378eb8e0c07343e1f3e94a794bf /arch/powerpc/sysdev
parentead837174d265b24334f0721a84cbdda8ccd89a7 (diff)
downloadlinux-linaro-stable-9d2ba6faa1c2e10546a4bdf0f9687436d7681b2f.tar.gz
[PATCH] powerpc: Fix i8259 cascade IRQ
setup_irq() aborts immediately if there's no handler for the IRQ in question. So i8259_init() should set up its handlers before trying to set up the cascade on IRQ 2. With this and the patch I sent a few days ago to fix initrd on ppc32, my Pegasos now runs the arch/powerpc kernel. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r--arch/powerpc/sysdev/i8259.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index 90bce6e0c191..b7ac32fdd776 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -207,6 +207,9 @@ void __init i8259_init(unsigned long intack_addr, int offset)
spin_unlock_irqrestore(&i8259_lock, flags);
+ for (i = 0; i < NUM_ISA_INTERRUPTS; ++i)
+ irq_desc[offset + i].handler = &i8259_pic;
+
/* reserve our resources */
setup_irq(offset + 2, &i8259_irqaction);
request_resource(&ioport_resource, &pic1_iores);
@@ -216,6 +219,4 @@ void __init i8259_init(unsigned long intack_addr, int offset)
if (intack_addr != 0)
pci_intack = ioremap(intack_addr, 1);
- for (i = 0; i < NUM_ISA_INTERRUPTS; ++i)
- irq_desc[offset + i].handler = &i8259_pic;
}