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gpio/omap: check return value from irq_alloc_generic_chip

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Ensure return value of irq_alloc_generic_chip() is checked before continuing
on to use it.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Todd Poynor 2011-07-18 07:43:14 -07:00 committed by Kevin Hilman
parent ece9528e5f
commit 832337490f
1 changed files with 5 additions and 0 deletions
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5
drivers/gpio/gpio-omap.c
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@ -1090,6 +1090,11 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start,
gc = irq_alloc_generic_chip("MPUIO", 1, irq_start, bank->base,
handle_simple_irq);
if (!gc) {
dev_err(bank->dev, "Memory alloc failed for gc\n");
return;
}
ct = gc->chip_types;
/* NOTE: No ack required, reading IRQ status clears it. */