Modify mach-omap2/irq.c to simplify the IRQ number-to-IRQ register and IRQ
number-to-register bit calculations.
Signed-off-by: Kyungmin Park <kmpark@xxxxxxxxxxxxx>
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Acked-by: Paul Mundt <lethal@xxxxxxxxxxxx>
size:
text data bss dec hex filename
3341347 170992 109008 3621347 3741e3 vmlinux.3430sdp
3341315 170992 109008 3621315 3741c3 vmlinux.3430sdp.patched
---
arch/arm/mach-omap2/irq.c | 17 +++++++----------
1 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index ac062ee..9300712 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -27,6 +27,9 @@
#define INTC_MIR_CLEAR0 0x0088
#define INTC_MIR_SET0 0x008c
+/* Number of IRQ state bits in each MIR register */
+#define IRQ_BITS_PER_REG 32
+
/*
* OMAP2 has a number of different interrupt controllers, each interrupt
* controller is identified as its own "bank". Register definitions are
@@ -67,24 +70,18 @@ static void omap_ack_irq(unsigned int irq)
static void omap_mask_irq(unsigned int irq)
{
- int offset = (irq >> 5) << 5;
+ int offset = irq & (~(IRQ_BITS_PER_REG - 1));
- if (irq >= 64)
- irq %= 64;
- else if (irq >= 32)
- irq %= 32;
+ irq &= (IRQ_BITS_PER_REG - 1);
intc_bank_write_reg(1 << irq, &irq_banks[0], INTC_MIR_SET0 + offset);
}
static void omap_unmask_irq(unsigned int irq)
{
- int offset = (irq >> 5) << 5;
+ int offset = irq & (~(IRQ_BITS_PER_REG - 1));
- if (irq >= 64)
- irq %= 64;
- else if (irq >= 32)
- irq %= 32;
+ irq &= (IRQ_BITS_PER_REG - 1);
intc_bank_write_reg(1 << irq, &irq_banks[0], INTC_MIR_CLEAR0 + offset);
}
--
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