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git://projects.qi-hardware.com/openwrt-xburst.git
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40 lines
1.1 KiB
Diff
40 lines
1.1 KiB
Diff
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Fix the usage of get_c0_compare_int: override cp0_compare_irq if the returned
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value is in the MIPS CPU IRQ range to ensure that c0_compare_int_usable()
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still works.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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--- a/arch/mips/kernel/cevt-r4k.c
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+++ b/arch/mips/kernel/cevt-r4k.c
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@@ -168,20 +168,23 @@ int __cpuinit r4k_clockevent_init(void)
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struct clock_event_device *cd;
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unsigned int irq;
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- if (!cpu_has_counter || !mips_hpt_frequency)
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- return -ENXIO;
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-
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- if (!c0_compare_int_usable())
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- return -ENXIO;
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-
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/*
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* With vectored interrupts things are getting platform specific.
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* get_c0_compare_int is a hook to allow a platform to return the
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* interrupt number of it's liking.
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*/
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irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
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- if (get_c0_compare_int)
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+ if (get_c0_compare_int) {
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irq = get_c0_compare_int();
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+ if ((irq >= MIPS_CPU_IRQ_BASE) && (irq < MIPS_CPU_IRQ_BASE + 8))
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+ cp0_compare_irq = irq - MIPS_CPU_IRQ_BASE;
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+ }
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+
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+ if (!cpu_has_counter || !mips_hpt_frequency)
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+ return -ENXIO;
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+
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+ if (!c0_compare_int_usable())
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+ return -ENXIO;
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cd = &per_cpu(mips_clockevent_device, cpu);
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