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

[Thomas Gleixner]

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);


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/