gpio/pca953x: Fix IRQ support.
It seems that in the normal case, IRQ_NOREQUEST needs to be explicitly cleared, otherwise claiming the interrupt fails. In the case of sparse interrupts, the descriptor needs to be allocated first. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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@ -517,8 +517,10 @@ out_failed:
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static void pca953x_irq_teardown(struct pca953x_chip *chip)
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{
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if (chip->irq_base != -1)
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if (chip->irq_base != -1) {
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irq_free_descs(chip->irq_base, chip->gpio_chip.ngpio);
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free_irq(chip->client->irq, chip);
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}
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}
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#else /* CONFIG_GPIO_PCA953X_IRQ */
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static int pca953x_irq_setup(struct pca953x_chip *chip,
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