On Thu, May 28, 2009 at 10:33 PM, Wolfram Sang <[email protected]> wrote: >> this is an example of how a simple 8313 Periodic Interval Timer (PIT) kernel >> driver >> registers for the PIT IRQ (Interrupt ID 65) >> >> #define PIT_IRQ 65 >> >> virq = irq_create_mapping(NULL, PIT_IRQ); >> set_irq_type(virq, IRQ_TYPE_LEVEL_LOW); >> >> if(request_irq(virq, (irq_handler_t)timerEvent, 0, "timer2", (void *)0)) >> { >> printk(KERN_ERR "request_irq() returned error for irq=%d virq=%d\n", >> PIT_IRQ, virq); >> } > > It is some time ago, but when I did something similar I needed the > following patch in order to use NULL for irq_create_mapping(). Have a > try, and if it is still needed (as it looks from a glimpse), then maybe > we should get it merged? > > === > > From: Wolfram Sang <[email protected]> > Subject: [PATCH] powerpc/cpm2: make cpm2_pic the default host > > Signed-off-by: Wolfram Sang <[email protected]> > --- > arch/powerpc/sysdev/cpm2_pic.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c > index 78f1f7c..7a7d4e5 100644 > --- a/arch/powerpc/sysdev/cpm2_pic.c > +++ b/arch/powerpc/sysdev/cpm2_pic.c > @@ -272,4 +272,5 @@ void cpm2_pic_init(struct device_node *node) > printk(KERN_ERR "CPM2 PIC: failed to allocate irq host!\n"); > return; > } > + irq_set_default_host(cpm2_pic_host); > }
Thanks guys. I can confirm that Wolfram's patch above is required to get Norbet's suggestion to work. Without the patch, I still get the original symptoms. I have tested this on 2.6.27.19. Daniel _______________________________________________ Linuxppc-dev mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-dev
