Messages in this thread | | | Subject | Re: [PATCH 1/2] MIPS: Malta: Fix i8259 irqchip setup | From | Matt Redfearn <> | Date | Fri, 31 Mar 2017 13:53:15 +0100 |
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Hi Ralf,
On 31/03/17 13:49, Ralf Baechle wrote: > On Fri, Mar 31, 2017 at 12:05:31PM +0100, Matt Redfearn wrote: > >> diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c >> index cb675ec6f283..474b372e0dd9 100644 >> --- a/arch/mips/mti-malta/malta-int.c >> +++ b/arch/mips/mti-malta/malta-int.c >> @@ -232,6 +232,19 @@ void __init arch_init_irq(void) >> { >> int corehi_irq; >> >> +#ifdef CONFIG_I8259 >> + /* >> + * Preallocate the i8259's expected virq's here. Since irqchip_init() >> + * will probe the irqchips in hierarchial order, i8259 is probed last. >> + * If anything allocates a virq before the i8259 is probed, it will >> + * be given one of the i8259's expected range and consequently setup >> + * of the i8259 will fail. >> + */ >> + WARN(irq_alloc_descs(I8259A_IRQ_BASE, I8259A_IRQ_BASE, >> + 16, numa_node_id()) < 0, >> + "Cannot reserve i8259 virqs at IRQ%d\n", I8259A_IRQ_BASE); >> +#endif /* CONFIG_I8259 */ >> + >> i8259_set_poll(mips_pcibios_iack); > CONFIG_I8259 is always defined on Malta so the #ifdef is pointless. > > Ralf
Ah, true. I was looking at arch/mips/include/asm/mach-generic/irq.h where I8259A_IRQ_BASE is defined, it's wrapped in that CONFIG so I kept it here, but you're right of course that Malta always defines it. Would you like a v2 with that removed?
Thanks, Matt
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