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>
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@ -301,22 +301,16 @@ static void jz_gpio_irq_demux_handler(unsigned int irq, struct irq_desc *desc)
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{
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uint32_t flag;
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unsigned int gpio_irq;
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unsigned int gpio_bank;
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struct jz_gpio_chip *chip = irq_desc_get_handler_data(desc);
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gpio_bank = JZ4740_IRQ_GPIO0 - irq;
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flag = readl(chip->base + JZ_REG_GPIO_FLAG);
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if (!flag)
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return;
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gpio_irq = __fls(flag);
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gpio_irq = chip->irq_base + __fls(flag);
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jz_gpio_check_trigger_both(chip, irq);
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gpio_irq += (gpio_bank << 5) + JZ4740_IRQ_GPIO(0);
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generic_handle_irq(gpio_irq);
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};
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