diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2018-08-22 22:41:09 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-08-29 09:09:02 +0200 |
| commit | 68491b075db2e905d7df1594cf127da9bcd05cab (patch) | |
| tree | 9e0e30802f92ab93f62825c9d8da168281a52f4a /drivers/gpio/gpio-ep93xx.c | |
| parent | 51ba88e32ff5b3caee39862c862a7a1fbae78b2b (diff) | |
| download | lwn-68491b075db2e905d7df1594cf127da9bcd05cab.tar.gz lwn-68491b075db2e905d7df1594cf127da9bcd05cab.zip | |
gpio: ep93xx: Use for_each_set_bit() in IRQ handler
This simplifies and standardizes the AB IRQ handler by using
the for_each_set_bit() library function.
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-ep93xx.c')
| -rw-r--r-- | drivers/gpio/gpio-ep93xx.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c index b2139ec43ce2..1248d83f860b 100644 --- a/drivers/gpio/gpio-ep93xx.c +++ b/drivers/gpio/gpio-ep93xx.c @@ -105,25 +105,21 @@ static void ep93xx_gpio_ab_irq_handler(struct irq_desc *desc) struct gpio_chip *gc = irq_desc_get_handler_data(desc); struct ep93xx_gpio *epg = gpiochip_get_data(gc); struct irq_chip *irqchip = irq_desc_get_chip(desc); - unsigned char status; - int i; + unsigned long stat; + int offset; chained_irq_enter(irqchip, desc); - status = readb(epg->base + EP93XX_GPIO_A_INT_STATUS); - for (i = 0; i < 8; i++) { - if (status & (1 << i)) { - int gpio_irq = gpio_to_irq(0) + i; - generic_handle_irq(gpio_irq); - } + stat = readb(epg->base + EP93XX_GPIO_A_INT_STATUS); + for_each_set_bit(offset, &stat, 8) { + int gpio_irq = gpio_to_irq(0) + offset; + generic_handle_irq(gpio_irq); } - status = readb(epg->base + EP93XX_GPIO_B_INT_STATUS); - for (i = 0; i < 8; i++) { - if (status & (1 << i)) { - int gpio_irq = gpio_to_irq(8) + i; - generic_handle_irq(gpio_irq); - } + stat = readb(epg->base + EP93XX_GPIO_B_INT_STATUS); + for_each_set_bit(offset, &stat, 8) { + int gpio_irq = gpio_to_irq(8) + offset; + generic_handle_irq(gpio_irq); } chained_irq_exit(irqchip, desc); |