[PATCH 4.19 31/34] ARM: OMAP: replace setup_irq() by request_irq()

Greg Kroah-Hartman
2021-07-09T13:22:37Z

From: afzal mohammed <afzal.mohd.ma@gmail.com>

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@linaro.org>
Cc: Keerthy <j-keerthy@ti.com>
Cc: Tero Kristo <kristo@kernel.org>
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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
@@ -610,11 +610,6 @@ 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 = {
@@ -627,6 +622,7 @@ 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;
@@ -670,9 +666,12 @@ 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
@@ -92,12 +92,6 @@ 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)
{
@@ -383,8 +377,9 @@ 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);