Messages in this thread Patch in this message | | | Date | Fri, 27 Mar 2020 21:39:32 +0530 | From | afzal mohammed <> | Subject | [PATCH v5 2/6] c6x: replace setup_irq() by request_irq() |
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request_irq() is preferred over setup_irq(). Invocations of setup_irq() occur after memory allocators are ready.
Per tglx[1], setup_irq() existed in olden days when allocators were not ready by the time early interrupts were initialized.
Hence replace setup_irq() by request_irq().
[1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com> ---
Link to v3, v2 & v1, [v3] https://lkml.kernel.org/r/20200304004143.3960-1-afzal.mohd.ma@gmail.com [v2] https://lkml.kernel.org/r/cover.1582471508.git.afzal.mohd.ma@gmail.com [v1] https://lkml.kernel.org/r/cover.1581478323.git.afzal.mohd.ma@gmail.com
v5: * No change v4: * Non-existent v3: * Split out from tree wide series, as Thomas suggested to get it thr' respective maintainers * Modify pr_err displayed in case of error * Re-arrange code & choose pr_err args as required to improve readability * Remove irrelevant parts from commit message & improve v2: * Replace pr_err("request_irq() on %s failed" by pr_err("%s: request_irq() failed" * Commit message massage
arch/c6x/platforms/timer64.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/c6x/platforms/timer64.c b/arch/c6x/platforms/timer64.c index d98d94303498..661f4c7c6ef6 100644 --- a/arch/c6x/platforms/timer64.c +++ b/arch/c6x/platforms/timer64.c @@ -165,13 +165,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction timer_iact = { - .name = "timer", - .flags = IRQF_TIMER, - .handler = timer_interrupt, - .dev_id = &t64_clockevent_device, -}; - void __init timer64_init(void) { struct clock_event_device *cd = &t64_clockevent_device; @@ -238,7 +231,9 @@ void __init timer64_init(void) cd->cpumask = cpumask_of(smp_processor_id()); clockevents_register_device(cd); - setup_irq(cd->irq, &timer_iact); + if (request_irq(cd->irq, timer_interrupt, IRQF_TIMER, "timer", + &t64_clockevent_device)) + pr_err("Failed to request irq %d (timer)\n", cd->irq); out: of_node_put(np); -- 2.25.1
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