This is a note to let you know that I've just added the patch titled ARM: OMAP: replace setup_irq() by request_irq() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-omap-replace-setup_irq-by-request_irq.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Mon Jun 21 05:29:17 PM CEST 2021 From: Tony Lindgren <tony@xxxxxxxxxxx> Date: Wed, 16 Jun 2021 15:31:09 +0300 Subject: ARM: OMAP: replace setup_irq() by request_irq() To: stable@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-omap@xxxxxxxxxxxxxxx, afzal mohammed <afzal.mohd.ma@xxxxxxxxx>, Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>, Keerthy <j-keerthy@xxxxxx>, Tero Kristo <kristo@xxxxxxxxxx> Message-ID: <20210616123112.65068-1-tony@xxxxxxxxxxx> From: afzal mohammed <afzal.mohd.ma@xxxxxxxxx> commit b75ca5217743e4d7076cf65e044e88389e44318d upstream. 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 Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> Cc: Keerthy <j-keerthy@xxxxxx> Cc: Tero Kristo <kristo@xxxxxxxxxx> Signed-off-by: afzal mohammed <afzal.mohd.ma@xxxxxxxxx> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/mach-omap1/pm.c | 13 ++++++------- arch/arm/mach-omap1/time.c | 10 +++------- arch/arm/mach-omap1/timer32k.c | 10 +++------- arch/arm/mach-omap2/timer.c | 11 +++-------- 4 files changed, 15 insertions(+), 29 deletions(-) --- a/arch/arm/mach-omap1/pm.c +++ b/arch/arm/mach-omap1/pm.c @@ -596,11 +596,6 @@ static irqreturn_t omap_wakeup_interrupt return IRQ_HANDLED; } -static struct irqaction omap_wakeup_irq = { - .name = "peripheral wakeup", - .handler = omap_wakeup_interrupt -}; - static const struct platform_suspend_ops omap_pm_ops = { @@ -613,6 +608,7 @@ static const struct platform_suspend_ops static int __init omap_pm_init(void) { int error = 0; + int irq; if (!cpu_class_is_omap1()) return -ENODEV; @@ -656,9 +652,12 @@ static int __init omap_pm_init(void) arm_pm_idle = omap1_pm_idle; if (cpu_is_omap7xx()) - setup_irq(INT_7XX_WAKE_UP_REQ, &omap_wakeup_irq); + irq = INT_7XX_WAKE_UP_REQ; else if (cpu_is_omap16xx()) - setup_irq(INT_1610_WAKE_UP_REQ, &omap_wakeup_irq); + irq = INT_1610_WAKE_UP_REQ; + if (request_irq(irq, omap_wakeup_interrupt, 0, "peripheral wakeup", + NULL)) + pr_err("Failed to request irq %d (peripheral wakeup)\n", irq); /* Program new power ramp-up time * (0 for most boards since we don't lower voltage when in deep sleep) --- a/arch/arm/mach-omap1/time.c +++ b/arch/arm/mach-omap1/time.c @@ -155,15 +155,11 @@ static irqreturn_t omap_mpu_timer1_inter return IRQ_HANDLED; } -static struct irqaction omap_mpu_timer1_irq = { - .name = "mpu_timer1", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = omap_mpu_timer1_interrupt, -}; - static __init void omap_init_mpu_timer(unsigned long rate) { - setup_irq(INT_TIMER1, &omap_mpu_timer1_irq); + if (request_irq(INT_TIMER1, omap_mpu_timer1_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "mpu_timer1", NULL)) + pr_err("Failed to request irq %d (mpu_timer1)\n", INT_TIMER1); omap_mpu_timer_start(0, (rate / HZ) - 1, 1); clockevent_mpu_timer1.cpumask = cpumask_of(0); --- a/arch/arm/mach-omap1/timer32k.c +++ b/arch/arm/mach-omap1/timer32k.c @@ -148,15 +148,11 @@ static irqreturn_t omap_32k_timer_interr return IRQ_HANDLED; } -static struct irqaction omap_32k_timer_irq = { - .name = "32KHz timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = omap_32k_timer_interrupt, -}; - static __init void omap_init_32k_timer(void) { - setup_irq(INT_OS_TIMER, &omap_32k_timer_irq); + if (request_irq(INT_OS_TIMER, omap_32k_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "32KHz timer", NULL)) + pr_err("Failed to request irq %d(32KHz timer)\n", INT_OS_TIMER); clockevent_32k_timer.cpumask = cpumask_of(0); clockevents_config_and_register(&clockevent_32k_timer, --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -91,12 +91,6 @@ static irqreturn_t omap2_gp_timer_interr return IRQ_HANDLED; } -static struct irqaction omap2_gp_timer_irq = { - .name = "gp_timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = omap2_gp_timer_interrupt, -}; - static int omap2_gp_timer_set_next_event(unsigned long cycles, struct clock_event_device *evt) { @@ -382,8 +376,9 @@ static void __init omap2_gp_clockevent_i &clockevent_gpt.name, OMAP_TIMER_POSTED); BUG_ON(res); - omap2_gp_timer_irq.dev_id = &clkev; - setup_irq(clkev.irq, &omap2_gp_timer_irq); + if (request_irq(clkev.irq, omap2_gp_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "gp_timer", &clkev)) + pr_err("Failed to request irq %d (gp_timer)\n", clkev.irq); __omap_dm_timer_int_enable(&clkev, OMAP_TIMER_INT_OVERFLOW); Patches currently in stable-queue which might be from tony@xxxxxxxxxxx are queue-5.4/clocksource-drivers-timer-ti-dm-add-clockevent-and-clocksource-support.patch queue-5.4/arm-omap-replace-setup_irq-by-request_irq.patch queue-5.4/clocksource-drivers-timer-ti-dm-prepare-to-handle-dra7-timer-wrap-issue.patch queue-5.4/clocksource-drivers-timer-ti-dm-handle-dra7-timer-wrap-errata-i940.patch