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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>
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dd640039e8
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3275d0723a
1 changed files with 4 additions and 2 deletions
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@ -503,10 +503,11 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
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struct pca953x_chip *chip = devid;
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u8 pending[MAX_BANK];
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u8 level;
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unsigned nhandled = 0;
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int i;
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if (!pca953x_irq_pending(chip, pending))
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return IRQ_HANDLED;
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return IRQ_NONE;
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for (i = 0; i < NBANK(chip); i++) {
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while (pending[i]) {
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@ -514,10 +515,11 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
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handle_nested_irq(irq_find_mapping(chip->domain,
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level + (BANK_SZ * i)));
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pending[i] &= ~(1 << level);
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nhandled++;
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}
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}
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return IRQ_HANDLED;
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return (nhandled > 0) ? IRQ_HANDLED : IRQ_NONE;
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}
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static int pca953x_gpio_irq_map(struct irq_domain *d, unsigned int irq,
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