The following commit has been merged into the irq/core branch of tip:
Commit-ID: 2ef1cb763d92f3e212005fcf5dcc713eaf42b257
Gitweb: https://git.kernel.org/tip/2ef1cb763d92f3e212005fcf5dcc713eaf42b257
Author: afzal mohammed <afzal.mohd.ma@xxxxxxxxx>
AuthorDate: Wed, 04 Mar 2020 06:18:38 +05:30
Committer: Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Sun, 08 Mar 2020 14:25:46
irqchip: 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@xxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200304004839.4729-1-afzal.mohd.ma@xxxxxxxxx
---
drivers/irqchip/irq-i8259.c | 16 ++++++----------
drivers/irqchip/irq-ingenic.c | 9 +++------
2 files changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/irqchip/irq-i8259.c b/drivers/irqchip/irq-i8259.c
index d000870..b6f6aa7 100644
--- a/drivers/irqchip/irq-i8259.c
+++ b/drivers/irqchip/irq-i8259.c
@@ -268,15 +268,6 @@ static void init_8259A(int auto_eoi)
raw_spin_unlock_irqrestore(&i8259A_lock, flags);
}
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2 = {
- .handler = no_action,
- .name = "cascade",
- .flags = IRQF_NO_THREAD,
-};
-
static struct resource pic1_io_resource = {
.name = "pic1",
.start = PIC_MASTER_CMD,
@@ -311,6 +302,10 @@ static const struct irq_domain_ops i8259A_ops = {
*/
struct irq_domain * __init __init_i8259_irqs(struct device_node *node)
{
+ /*
+ * PIC_CASCADE_IR is cascade interrupt to second interrupt controller
+ */
+ int irq = I8259A_IRQ_BASE + PIC_CASCADE_IR;
struct irq_domain *domain;
insert_resource(&ioport_resource, &pic1_io_resource);
@@ -323,7 +318,8 @@ struct irq_domain * __init __init_i8259_irqs(struct device_node *node)
if (!domain)
panic("Failed to add i8259 IRQ domain");
- setup_irq(I8259A_IRQ_BASE + PIC_CASCADE_IR, &irq2);
+ if (request_irq(irq, no_action, IRQF_NO_THREAD, "cascade", NULL))
+ pr_err("Failed to register cascade interrupt\n");
register_syscore_ops(&i8259_syscore_ops);
return domain;
}
diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c
index c5589ee..9f3da42 100644
--- a/drivers/irqchip/irq-ingenic.c
+++ b/drivers/irqchip/irq-ingenic.c
@@ -58,11 +58,6 @@ static irqreturn_t intc_cascade(int irq, void *data)
return IRQ_HANDLED;
}
-static struct irqaction intc_cascade_action = {
- .handler = intc_cascade,
- .name = "SoC intc cascade interrupt",
-};
-
static int __init ingenic_intc_of_init(struct device_node *node,
unsigned num_chips)
{
@@ -130,7 +125,9 @@ static int __init ingenic_intc_of_init(struct device_node *node,
irq_reg_writel(gc, IRQ_MSK(32), JZ_REG_INTC_SET_MASK);
}
- setup_irq(parent_irq, &intc_cascade_action);
+ if (request_irq(parent_irq, intc_cascade, 0,
+ "SoC intc cascade interrupt", NULL))
+ pr_err("Failed to register SoC intc cascade interrupt\n");
return 0;
out_domain_remove:
|