[patch 2/2] dma/ipu: 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.

This is also a preparation for the removal of the 'irq' argument from
interrupt flow handlers.

Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Vinod Koul <vinod.koul@xxxxxxxxx>
Cc: dmaengine@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 drivers/dma/ipu/ipu_irq.c       |    2 +-
 drivers/gpu/ipu-v3/ipu-common.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

Index: tip/drivers/dma/ipu/ipu_irq.c
===================================================================
--- tip.orig/drivers/dma/ipu/ipu_irq.c
+++ tip/drivers/dma/ipu/ipu_irq.c
@@ -268,7 +268,7 @@ int ipu_irq_unmap(unsigned int source)
 /* Chained IRQ handler for IPU error interrupt */
 static void ipu_irq_err(unsigned int irq, struct irq_desc *desc)
 {
-	struct ipu *ipu = irq_get_handler_data(irq);
+	struct ipu *ipu = irq_desc_get_handler_data(desc);
 	u32 status;
 	int i, line;
 
Index: tip/drivers/gpu/ipu-v3/ipu-common.c
===================================================================
--- tip.orig/drivers/gpu/ipu-v3/ipu-common.c
+++ tip/drivers/gpu/ipu-v3/ipu-common.c
@@ -915,8 +915,8 @@ static void ipu_irq_handle(struct ipu_so
 static void ipu_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
 	struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
 	const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14};
-	struct irq_chip *chip = irq_get_chip(irq);
 
 	chained_irq_enter(chip, desc);
 
@@ -928,8 +928,8 @@ static void ipu_irq_handler(unsigned int
 static void ipu_err_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
 	struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
 	const int int_reg[] = { 4, 5, 8, 9};
-	struct irq_chip *chip = irq_get_chip(irq);
 
 	chained_irq_enter(chip, desc);
 


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