diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-mxc/gpio.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/arm/plat-mxc/gpio.c b/arch/arm/plat-mxc/gpio.c index bee100b7e93..0b11554dada 100644 --- a/arch/arm/plat-mxc/gpio.c +++ b/arch/arm/plat-mxc/gpio.c @@ -154,24 +154,22 @@ static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio) __raw_writel(val | (edge << (bit << 1)), reg); } -/* handle n interrupts in one status register */ +/* handle 32 interrupts in one status register */ static void mxc_gpio_irq_handler(struct mxc_gpio_port *port, u32 irq_stat) { - u32 gpio_irq_no; + u32 gpio_irq_no_base = port->virtual_irq_start; - gpio_irq_no = port->virtual_irq_start; - for (; irq_stat != 0; irq_stat >>= 1, gpio_irq_no++) { - u32 gpio = irq_to_gpio(gpio_irq_no); + while (irq_stat != 0) { + int irqoffset = fls(irq_stat) - 1; - if ((irq_stat & 1) == 0) - continue; + BUG_ON(!(irq_desc[gpio_irq_no_base + irqoffset].handle_irq)); - BUG_ON(!(irq_desc[gpio_irq_no].handle_irq)); + if (port->both_edges & (1 << irqoffset)) + mxc_flip_edge(port, irqoffset); - if (port->both_edges & (1 << (gpio & 31))) - mxc_flip_edge(port, gpio); + generic_handle_irq(gpio_irq_no_base + irqoffset); - generic_handle_irq(gpio_irq_no); + irq_stat &= ~(1 << irqoffset); } } |