[patch 4/5] sh/intc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc

From: Thomas Gleixner
Date: Mon Jul 13 2015 - 16:52:04 EST


From: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>

Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.

Also replace generic_handle_irq with generic_handle_irq_desc() to avoid
looking up irq_desc again.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxxxx>
Cc: Magnus Damm <magnus.damm@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/sh/boards/mach-se/7343/irq.c | 2 +-
arch/sh/boards/mach-se/7722/irq.c | 2 +-
arch/sh/boards/mach-x3proto/gpio.c | 2 +-
drivers/sh/intc/core.c | 2 +-
drivers/sh/intc/virq.c | 14 ++++++++------
5 files changed, 12 insertions(+), 10 deletions(-)

Index: tip/arch/sh/boards/mach-se/7343/irq.c
===================================================================
--- tip.orig/arch/sh/boards/mach-se/7343/irq.c
+++ tip/arch/sh/boards/mach-se/7343/irq.c
@@ -31,7 +31,7 @@ struct irq_domain *se7343_irq_domain;

static void se7343_irq_demux(unsigned int irq, struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long mask;
int bit;
Index: tip/arch/sh/boards/mach-se/7722/irq.c
===================================================================
--- tip.orig/arch/sh/boards/mach-se/7722/irq.c
+++ tip/arch/sh/boards/mach-se/7722/irq.c
@@ -30,7 +30,7 @@ struct irq_domain *se7722_irq_domain;

static void se7722_irq_demux(unsigned int irq, struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long mask;
int bit;
Index: tip/arch/sh/boards/mach-x3proto/gpio.c
===================================================================
--- tip.orig/arch/sh/boards/mach-x3proto/gpio.c
+++ tip/arch/sh/boards/mach-x3proto/gpio.c
@@ -62,7 +62,7 @@ static int x3proto_gpio_to_irq(struct gp

static void x3proto_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long mask;
int pin;
Index: tip/drivers/sh/intc/core.c
===================================================================
--- tip.orig/drivers/sh/intc/core.c
+++ tip/drivers/sh/intc/core.c
@@ -67,7 +67,7 @@ void intc_set_prio_level(unsigned int ir

static void intc_redirect_irq(unsigned int irq, struct irq_desc *desc)
{
- generic_handle_irq((unsigned int)irq_get_handler_data(irq));
+ generic_handle_irq((unsigned int)irq_desc_get_handler_data(desc));
}

static void __init intc_register_irq(struct intc_desc *desc,
Index: tip/drivers/sh/intc/virq.c
===================================================================
--- tip.orig/drivers/sh/intc/virq.c
+++ tip/drivers/sh/intc/virq.c
@@ -111,7 +111,7 @@ static int add_virq_to_pirq(unsigned int

static void intc_virq_handler(unsigned int irq, struct irq_desc *desc)
{
- struct irq_data *data = irq_get_irq_data(irq);
+ struct irq_data *data = irq_desc_get_irq_data(desc);
struct irq_chip *chip = irq_data_get_irq_chip(data);
struct intc_virq_list *entry, *vlist = irq_data_get_irq_handler_data(data);
struct intc_desc_int *d = get_intc_desc(irq);
@@ -120,12 +120,14 @@ static void intc_virq_handler(unsigned i

for_each_virq(entry, vlist) {
unsigned long addr, handle;
+ struct irq_desc *vdesc = irq_to_desc(entry->irq);

- handle = (unsigned long)irq_get_handler_data(entry->irq);
- addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
-
- if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
- generic_handle_irq(entry->irq);
+ if (vdesc) {
+ handle = (unsigned long)irq_desc_get_handler_data(vdesc);
+ addr = INTC_REG(d, _INTC_ADDR_E(handle), 0);
+ if (intc_reg_fns[_INTC_FN(handle)](addr, handle, 0))
+ generic_handle_irq_desc(entry->irq, vdesc);
+ }
}

chip->irq_unmask(data);


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