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pinctrl: st: Fix error check for of_irq_to_resource usage

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This patch fixes an error check while using of_irq_to_resource.
of_irq_to_resource returns non-zero interrupt number on success and zero
on error. The driver was using error check is wrong way.

Without this patch the driver will configure interrupt zero if there is
no interrupt specified in the node.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Srinivas Kandagatla 2014-03-12 13:35:05 +00:00 committed by Linus Walleij
parent 93cfb2d862
commit bcca9220b2
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/pinctrl-st.c
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@ -1569,7 +1569,7 @@ static int st_gpiolib_register_bank(struct st_pinctrl *info,
* [irqN]----> [gpio-bank (n)]
*/
if (!of_irq_to_resource(np, 0, &irq_res)) {
if (of_irq_to_resource(np, 0, &irq_res)) {
gpio_irq = irq_res.start;
irq_set_chained_handler(gpio_irq, st_gpio_irq_handler);
irq_set_handler_data(gpio_irq, bank);