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authorLars-Peter Clausen <lars@metafoo.de>2011-09-24 02:29:54 +0200
committerRalf Baechle <ralf@linux-mips.org>2011-10-24 23:34:25 +0100
commitfe5a8b7f0602b5a536d23cd3468461e9de76256b (patch)
tree4bd2f84494fc578c87a2327d60079151a12d586f /arch/mips/jz4740
parent83bc769200802c9ce8fd1c7315fd14198d385b12 (diff)
MIPS: JZ4740: GPIO: Simplify IRQ demuxer
We already know the base IRQ for a GPIO chip, so there is no need to recalculate it in the demux handler. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: Lars-Peter Clausen <lars@metafoo.de> Patchwork: http://patchwork.linux-mips.org/patch/2432/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/jz4740')
-rw-r--r--arch/mips/jz4740/gpio.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/mips/jz4740/gpio.c b/arch/mips/jz4740/gpio.c
index 415d7d7e3283..bbbe12ba60ab 100644
--- a/arch/mips/jz4740/gpio.c
+++ b/arch/mips/jz4740/gpio.c
@@ -301,22 +301,16 @@ static void jz_gpio_irq_demux_handler(unsigned int irq, struct irq_desc *desc)
{
uint32_t flag;
unsigned int gpio_irq;
- unsigned int gpio_bank;
struct jz_gpio_chip *chip = irq_desc_get_handler_data(desc);
- gpio_bank = JZ4740_IRQ_GPIO0 - irq;
-
flag = readl(chip->base + JZ_REG_GPIO_FLAG);
-
if (!flag)
return;
- gpio_irq = __fls(flag);
+ gpio_irq = chip->irq_base + __fls(flag);
jz_gpio_check_trigger_both(chip, irq);
- gpio_irq += (gpio_bank << 5) + JZ4740_IRQ_GPIO(0);
-
generic_handle_irq(gpio_irq);
};

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