diff options
| author |   afzal mohammed <afzal.mohd.ma@gmail.com> | 2020-03-04 06:11:11 +0530 |
|---|---|---|
| committer |   Max Filippov <jcmvbkbc@gmail.com> | 2020-03-03 18:40:26 -0800 |
| commit | 98060484e2328a4d29b62eb42ef31219a4629587 (patch) | |
| tree | f0ae7c518d95a8eb18c7b7b40a849c99b3dd1200 /arch/xtensa/kernel/time.c | |
| parent | Linux 5.6-rc4 (diff) | |
| download | linux-dev-98060484e2328a4d29b62eb42ef31219a4629587.tar.xz linux-dev-98060484e2328a4d29b62eb42ef31219a4629587.zip | |
xtensa: replace setup_irq() by request_irq()
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>
Message-Id: <20200304004112.3848-1-afzal.mohd.ma@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/xtensa/kernel/time.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c index 69db8c93c1f9..77971fe4cc95 100644 --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -128,12 +128,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction timer_irqaction = { - .handler = timer_interrupt, - .flags = IRQF_TIMER, - .name = "timer", -}; - void local_timer_setup(unsigned cpu) { struct ccount_timer *timer = &per_cpu(ccount_timer, cpu); @@ -184,6 +178,8 @@ static inline void calibrate_ccount(void) void __init time_init(void) { + int irq; + of_clk_init(NULL); #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT pr_info("Calibrating CPU frequency "); @@ -199,7 +195,9 @@ void __init time_init(void) __func__); clocksource_register_hz(&ccount_clocksource, ccount_freq); local_timer_setup(0); - setup_irq(this_cpu_ptr(&ccount_timer)->evt.irq, &timer_irqaction); + irq = this_cpu_ptr(&ccount_timer)->evt.irq; + if (request_irq(irq, timer_interrupt, IRQF_TIMER, "timer", NULL)) + pr_err("Failed to request irq %d (timer)\n", irq); sched_clock_register(ccount_sched_clock_read, 32, ccount_freq); timer_probe(); } |