ARM: S3C64XX: Use chip_data to store the shift for EINTs

This makes all the functions that use the shift slightly smaller, one
instruction in most cases but more for ack() and maskack().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/arch/arm/mach-s3c64xx/irq-eint.c b/arch/arm/mach-s3c64xx/irq-eint.c
index 169ee29d37d7..2ead8189da74 100644
--- a/arch/arm/mach-s3c64xx/irq-eint.c
+++ b/arch/arm/mach-s3c64xx/irq-eint.c
@@ -30,14 +30,14 @@
 #include <plat/pm.h>
 
 #define eint_offset(irq)        ((irq) - IRQ_EINT(0))
-#define eint_irq_to_bit(irq)    (1 << eint_offset(irq))
+#define eint_irq_to_bit(irq)    ((u32)(1 << eint_offset(irq)))
 
 static inline void s3c_irq_eint_mask(struct irq_data *data)
 {
         u32 mask;
 
         mask = __raw_readl(S3C64XX_EINT0MASK);
-        mask |= eint_irq_to_bit(data->irq);
+        mask |= (u32)data->chip_data;
         __raw_writel(mask, S3C64XX_EINT0MASK);
 }
 
@@ -46,13 +46,13 @@ static void s3c_irq_eint_unmask(struct irq_data *data)
         u32 mask;
 
         mask = __raw_readl(S3C64XX_EINT0MASK);
-        mask &= ~eint_irq_to_bit(data->irq);
+        mask &= ~((u32)data->chip_data);
         __raw_writel(mask, S3C64XX_EINT0MASK);
 }
 
 static inline void s3c_irq_eint_ack(struct irq_data *data)
 {
-        __raw_writel(eint_irq_to_bit(data->irq), S3C64XX_EINT0PEND);
+        __raw_writel((u32)data->chip_data, S3C64XX_EINT0PEND);
 }
 
 static void s3c_irq_eint_maskack(struct irq_data *data)
@@ -198,6 +198,7 @@ static int __init s3c64xx_init_irq_eint(void)
 
         for (irq = IRQ_EINT(0); irq <= IRQ_EINT(27); irq++) {
                 set_irq_chip(irq, &s3c_irq_eint);
+                set_irq_chip_data(irq, (void *)eint_irq_to_bit(irq));
                 set_irq_handler(irq, handle_level_irq);
                 set_irq_flags(irq, IRQF_VALID);
         }