From ba000760eb0f182e6ef04faca70bb9737a9674b4 Mon Sep 17 00:00:00 2001 From: afzal mohammed Date: Sun, 1 Mar 2020 06:56:55 +0530 Subject: [PATCH] m68k: 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 Tested-by: Greg Ungerer Signed-off-by: Greg Ungerer --- arch/m68k/68000/timers.c | 16 +++++++--------- arch/m68k/coldfire/pit.c | 16 +++++++--------- arch/m68k/coldfire/sltimers.c | 29 +++++++++++++++-------------- arch/m68k/coldfire/timers.c | 31 +++++++++++++++---------------- 4 files changed, 44 insertions(+), 48 deletions(-) diff --git a/arch/m68k/68000/timers.c b/arch/m68k/68000/timers.c index 71ddb4c98726..1c8e8a83c325 100644 --- a/arch/m68k/68000/timers.c +++ b/arch/m68k/68000/timers.c @@ -68,14 +68,6 @@ static irqreturn_t hw_tick(int irq, void *dummy) /***************************************************************************/ -static struct irqaction m68328_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER, - .handler = hw_tick, -}; - -/***************************************************************************/ - static u64 m68328_read_clk(struct clocksource *cs) { unsigned long flags; @@ -102,11 +94,17 @@ static struct clocksource m68328_clk = { void hw_timer_init(irq_handler_t handler) { + int ret; + /* disable timer 1 */ TCTL = 0; /* set ISR */ - setup_irq(TMR_IRQ_NUM, &m68328_timer_irq); + ret = request_irq(TMR_IRQ_NUM, hw_tick, IRQF_TIMER, "timer", NULL); + if (ret) { + pr_err("Failed to request irq %d (timer): %pe\n", TMR_IRQ_NUM, + ERR_PTR(ret)); + } /* Restart mode, Enable int, Set clock source */ TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE; diff --git a/arch/m68k/coldfire/pit.c b/arch/m68k/coldfire/pit.c index eb6f16b0e2e6..fd1d9c915daa 100644 --- a/arch/m68k/coldfire/pit.c +++ b/arch/m68k/coldfire/pit.c @@ -111,14 +111,6 @@ static irqreturn_t pit_tick(int irq, void *dummy) /***************************************************************************/ -static struct irqaction pit_irq = { - .name = "timer", - .flags = IRQF_TIMER, - .handler = pit_tick, -}; - -/***************************************************************************/ - static u64 pit_read_clk(struct clocksource *cs) { unsigned long flags; @@ -146,6 +138,8 @@ static struct clocksource pit_clk = { void hw_timer_init(irq_handler_t handler) { + int ret; + cf_pit_clockevent.cpumask = cpumask_of(smp_processor_id()); cf_pit_clockevent.mult = div_sc(FREQ, NSEC_PER_SEC, 32); cf_pit_clockevent.max_delta_ns = @@ -156,7 +150,11 @@ void hw_timer_init(irq_handler_t handler) cf_pit_clockevent.min_delta_ticks = 0x3f; clockevents_register_device(&cf_pit_clockevent); - setup_irq(MCF_IRQ_PIT1, &pit_irq); + ret = request_irq(MCF_IRQ_PIT1, pit_tick, IRQF_TIMER, "timer", NULL); + if (ret) { + pr_err("Failed to request irq %d (timer): %pe\n", MCF_IRQ_PIT1, + ERR_PTR(ret)); + } clocksource_register_hz(&pit_clk, FREQ); } diff --git a/arch/m68k/coldfire/sltimers.c b/arch/m68k/coldfire/sltimers.c index 1b11e7bacab3..5ab81c9c552d 100644 --- a/arch/m68k/coldfire/sltimers.c +++ b/arch/m68k/coldfire/sltimers.c @@ -50,18 +50,19 @@ irqreturn_t mcfslt_profile_tick(int irq, void *dummy) return IRQ_HANDLED; } -static struct irqaction mcfslt_profile_irq = { - .name = "profile timer", - .flags = IRQF_TIMER, - .handler = mcfslt_profile_tick, -}; - void mcfslt_profile_init(void) { + int ret; + printk(KERN_INFO "PROFILE: lodging TIMER 1 @ %dHz as profile timer\n", PROFILEHZ); - setup_irq(MCF_IRQ_PROFILER, &mcfslt_profile_irq); + ret = request_irq(MCF_IRQ_PROFILER, mcfslt_profile_tick, IRQF_TIMER, + "profile timer", NULL); + if (ret) { + pr_err("Failed to request irq %d (profile timer): %pe\n", + MCF_IRQ_PROFILER, ERR_PTR(ret)); + } /* Set up TIMER 2 as high speed profile clock */ __raw_writel(MCF_BUSCLK / PROFILEHZ - 1, PA(MCFSLT_STCNT)); @@ -92,12 +93,6 @@ static irqreturn_t mcfslt_tick(int irq, void *dummy) return timer_interrupt(irq, dummy); } -static struct irqaction mcfslt_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER, - .handler = mcfslt_tick, -}; - static u64 mcfslt_read_clk(struct clocksource *cs) { unsigned long flags; @@ -126,6 +121,8 @@ static struct clocksource mcfslt_clk = { void hw_timer_init(irq_handler_t handler) { + int r; + mcfslt_cycles_per_jiffy = MCF_BUSCLK / HZ; /* * The coldfire slice timer (SLT) runs from STCNT to 0 included, @@ -140,7 +137,11 @@ void hw_timer_init(irq_handler_t handler) mcfslt_cnt = mcfslt_cycles_per_jiffy; timer_interrupt = handler; - setup_irq(MCF_IRQ_TIMER, &mcfslt_timer_irq); + r = request_irq(MCF_IRQ_TIMER, mcfslt_tick, IRQF_TIMER, "timer", NULL); + if (r) { + pr_err("Failed to request irq %d (timer): %pe\n", MCF_IRQ_TIMER, + ERR_PTR(r)); + } clocksource_register_hz(&mcfslt_clk, MCF_BUSCLK); diff --git a/arch/m68k/coldfire/timers.c b/arch/m68k/coldfire/timers.c index 227aa5d13709..b8301fddf901 100644 --- a/arch/m68k/coldfire/timers.c +++ b/arch/m68k/coldfire/timers.c @@ -82,14 +82,6 @@ static irqreturn_t mcftmr_tick(int irq, void *dummy) /***************************************************************************/ -static struct irqaction mcftmr_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER, - .handler = mcftmr_tick, -}; - -/***************************************************************************/ - static u64 mcftmr_read_clk(struct clocksource *cs) { unsigned long flags; @@ -118,6 +110,8 @@ static struct clocksource mcftmr_clk = { void hw_timer_init(irq_handler_t handler) { + int r; + __raw_writew(MCFTIMER_TMR_DISABLE, TA(MCFTIMER_TMR)); mcftmr_cycles_per_jiffy = FREQ / HZ; /* @@ -134,7 +128,11 @@ void hw_timer_init(irq_handler_t handler) timer_interrupt = handler; init_timer_irq(); - setup_irq(MCF_IRQ_TIMER, &mcftmr_timer_irq); + r = request_irq(MCF_IRQ_TIMER, mcftmr_tick, IRQF_TIMER, "timer", NULL); + if (r) { + pr_err("Failed to request irq %d (timer): %pe\n", MCF_IRQ_TIMER, + ERR_PTR(r)); + } #ifdef CONFIG_HIGHPROFILE coldfire_profile_init(); @@ -170,14 +168,10 @@ irqreturn_t coldfire_profile_tick(int irq, void *dummy) /***************************************************************************/ -static struct irqaction coldfire_profile_irq = { - .name = "profile timer", - .flags = IRQF_TIMER, - .handler = coldfire_profile_tick, -}; - void coldfire_profile_init(void) { + int ret; + printk(KERN_INFO "PROFILE: lodging TIMER2 @ %dHz as profile timer\n", PROFILEHZ); @@ -188,7 +182,12 @@ void coldfire_profile_init(void) __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 | MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, PA(MCFTIMER_TMR)); - setup_irq(MCF_IRQ_PROFILER, &coldfire_profile_irq); + ret = request_irq(MCF_IRQ_PROFILER, coldfire_profile_tick, IRQF_TIMER, + "profile timer", NULL); + if (ret) { + pr_err("Failed to request irq %d (profile timer): %pe\n", + MCF_IRQ_PROFILER, ERR_PTR(ret)); + } } /***************************************************************************/