diff options
| author | Toby Smith <toby@tismith.id.au> | 2014-04-30 12:01:40 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-05-09 14:55:26 +0400 |
| commit | 3275d0723a4cfad2199905623202edaa1ecba8c2 (patch) | |
| tree | 86e43ca7dcfa41b8b7b52a415bf70df7766a4324 /drivers/gpio/gpio-pca953x.c | |
| parent | dd640039e8de4135fd59d4d963487d1239d6fabe (diff) | |
| download | linux-3275d0723a4cfad2199905623202edaa1ecba8c2.tar.xz | |
gpio: pca953x: return IRQ_NONE when appropriate
The irq handler should return IRQ_NONE or IRQ_HANDLED to report
if we have handled the interrupt.
Signed-off-by: Toby Smith <toby@tismith.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index d550d8e58705..83cc2c8f105f 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -503,10 +503,11 @@ 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)) - return IRQ_HANDLED; + return IRQ_NONE; for (i = 0; i < NBANK(chip); i++) { while (pending[i]) { @@ -514,10 +515,11 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid) handle_nested_irq(irq_find_mapping(chip->domain, level + (BANK_SZ * i))); pending[i] &= ~(1 << level); + nhandled++; } } - return IRQ_HANDLED; + return (nhandled > 0) ? IRQ_HANDLED : IRQ_NONE; } static int pca953x_gpio_irq_map(struct irq_domain *d, unsigned int irq, |