From 05a90cc7293878aa5b914e380a02ea9b65e2336d Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Mon, 7 Nov 2016 08:53:20 -0800 Subject: [PATCH] pinctrl-sx150x: Simplify interrupt handler Make use of for_each_set_bit macro and reduce boilerplate code. Tested-by: Neil Armstrong Acked-by: Neil Armstrong Signed-off-by: Andrey Smirnov Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-sx150x.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/pinctrl/pinctrl-sx150x.c b/drivers/pinctrl/pinctrl-sx150x.c index f2ec072..78e15c9 100644 --- a/drivers/pinctrl/pinctrl-sx150x.c +++ b/drivers/pinctrl/pinctrl-sx150x.c @@ -465,11 +465,9 @@ static int sx150x_irq_set_type(struct irq_data *d, unsigned int flow_type) static irqreturn_t sx150x_irq_thread_fn(int irq, void *dev_id) { struct sx150x_pinctrl *pctl = (struct sx150x_pinctrl *)dev_id; - unsigned int nhandled = 0; - unsigned int sub_irq; - unsigned int n; - s32 err; + unsigned long n, status; unsigned int val; + int err; err = regmap_read(pctl->regmap, pctl->data->reg_irq_src, &val); if (err < 0) @@ -479,15 +477,11 @@ static irqreturn_t sx150x_irq_thread_fn(int irq, void *dev_id) if (err < 0) return IRQ_NONE; - for (n = 0; n < pctl->data->ngpios; ++n) { - if (val & BIT(n)) { - sub_irq = irq_find_mapping(pctl->gpio.irqdomain, n); - handle_nested_irq(sub_irq); - ++nhandled; - } - } + status = val; + for_each_set_bit(n, &status, pctl->data->ngpios) + handle_nested_irq(irq_find_mapping(pctl->gpio.irqdomain, n)); - return (nhandled > 0 ? IRQ_HANDLED : IRQ_NONE); + return IRQ_HANDLED; } static void sx150x_irq_bus_lock(struct irq_data *d) -- 2.7.4