From a97832f224893d6155aa785773df70263cfe94ef Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 4 Dec 2019 16:53:30 -0800 Subject: gpio: pca953x: remove redundant variable and check in IRQ handler We always will have at least one iteration of the loop due to pending being guaranteed to be non-zero. That is, we may remove extra variable and check in the IRQ handler. Link: http://lkml.kernel.org/r/20191022172922.61232-9-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko Acked-by: Linus Walleij Cc: Bartosz Golaszewski Cc: Geert Uytterhoeven Cc: Marek Vasut Cc: Rasmus Villemoes Cc: Thomas Petazzoni Cc: William Breathitt Gray Cc: Yury Norov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/gpio-pca953x.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 232e3f987511..9f3301130efb 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -743,7 +743,6 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid) struct pca953x_chip *chip = devid; u8 pending[MAX_BANK]; u8 level; - unsigned nhandled = 0; int i; if (!pca953x_irq_pending(chip, pending)) @@ -755,11 +754,10 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid) handle_nested_irq(irq_find_mapping(chip->gpio_chip.irq.domain, level + (BANK_SZ * i))); pending[i] &= ~(1 << level); - nhandled++; } } - return (nhandled > 0) ? IRQ_HANDLED : IRQ_NONE; + return IRQ_HANDLED; } static int pca953x_irq_setup(struct pca953x_chip *chip, -- cgit v1.2.3-59-g8ed1b