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MIPS: cevt-r4k: Don't call get_c0_compare_int if timer irq is installed
This avoids warning: [ 0.118053] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:283 Caused by get_c0_compare_int on secondary CPU. We also skipped saving IRQ number to struct clock_event_device *cd as it's never used by clockevent core, as per comments it's only meant for "non CPU local devices". Reported-by: Serge Semin <fancer.lancer@gmail.com> Closes: https://lore.kernel.org/linux-mips/6szkkqxpsw26zajwysdrwplpjvhl5abpnmxgu2xuj3dkzjnvsf@4daqrz4mf44k/ Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Tested-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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@ -303,13 +303,6 @@ int r4k_clockevent_init(void)
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if (!c0_compare_int_usable())
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return -ENXIO;
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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 its liking.
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*/
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irq = get_c0_compare_int();
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cd = &per_cpu(mips_clockevent_device, cpu);
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cd->name = "MIPS";
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@ -320,7 +313,6 @@ int r4k_clockevent_init(void)
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min_delta = calculate_min_delta();
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cd->rating = 300;
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cd->irq = irq;
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cd->cpumask = cpumask_of(cpu);
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cd->set_next_event = mips_next_event;
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cd->event_handler = mips_event_handler;
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@ -332,6 +324,13 @@ int r4k_clockevent_init(void)
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cp0_timer_irq_installed = 1;
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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 its liking.
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*/
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irq = get_c0_compare_int();
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if (request_irq(irq, c0_compare_interrupt, flags, "timer",
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c0_compare_interrupt))
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pr_err("Failed to request irq %d (timer)\n", irq);
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