pinctrl: sirf: atlas7: fix of_irq_get() error check

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of_irq_get() may return  any negative error number as well as 0 on failure,
while the driver only checks for -EPROBE_DEFER, blithely continuing with
the call to gpiochip_set_chained_irqchip() -- that function expects the
parent IRQ as *unsigned int*, so would probably do nothing  when a large
IRQ number resulting from a conversion of a negative error number is passed
to it, however passing 0 would probably work but the driver won't receive
valid GPIO bank interrupts.

Check for 'ret <= 0' instead and return -ENXIO from the driver's probe iff
of_irq_get() returned 0.

Fixes: f936779329 ("pinctrl: sirf: add sirf atlas7 pinctrl and gpio support")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Sergei Shtylyov 2017-07-30 22:38:48 +03:00 • committed by Linus Walleij

parent 5fdd1a6a09

commit 48e43b3e89

1 changed files with 3 additions and 1 deletions

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drivers/pinctrl/sirf/pinctrl-atlas7.c

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