From f4d4c354bca18210296cc0a8f592c0cdb720bf20 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 25 Oct 2006 13:22:27 +1000 Subject: [POWERPC] Fix CHRP platforms with only 8259 On CHRP platforms with only a 8259 controller, we should set the default IRQ host to the 8259 driver's one for the IRQ probing fallbacks to work in case the IRQ tree is incorrect (like on Pegasos for example). Without this fix, we get a bunch of WARN_ON's during boot. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/chrp/setup.c | 4 +++- arch/powerpc/sysdev/i8259.c | 5 +++++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c index cae3d13229b9..49b8dabcbc99 100644 --- a/arch/powerpc/platforms/chrp/setup.c +++ b/arch/powerpc/platforms/chrp/setup.c @@ -477,8 +477,10 @@ static void __init chrp_find_8259(void) " address, polling\n"); i8259_init(pic, chrp_int_ack); - if (ppc_md.get_irq == NULL) + if (ppc_md.get_irq == NULL) { ppc_md.get_irq = i8259_irq; + irq_set_default_host(i8259_get_host()); + } if (chrp_mpic != NULL) { cascade_irq = irq_of_parse_and_map(pic, 0); if (cascade_irq == NO_IRQ) diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c index 0450265d73bb..ad87adc975bc 100644 --- a/arch/powerpc/sysdev/i8259.c +++ b/arch/powerpc/sysdev/i8259.c @@ -224,6 +224,11 @@ static struct irq_host_ops i8259_host_ops = { .xlate = i8259_host_xlate, }; +struct irq_host *i8259_get_host(void) +{ + return i8259_host; +} + /** * i8259_init - Initialize the legacy controller * @node: device node of the legacy PIC (can be NULL, but then, it will match -- cgit v1.2.3-59-g8ed1b