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gpio: msic: fix error return code in platform_msic_gpio_probe() 

[ Upstream commit ca1f3ae315 ]

platform_get_irq() returns an error code, but the gpio-msic driver
ignores it and always returns -EINVAL. This is not correct, and
prevents -EPROBE_DEFER from being propagated properly.

Notice that platform_get_irq() no longer returns 0 on error:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af

Print and propagate the return value of platform_get_irq on failure.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2017-08-03 17:00:01 -05:00 committed by Greg Kroah-Hartman
parent 20d01c513f
commit 7f71f461af
1 changed files with 2 additions and 2 deletions
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4
drivers/gpio/gpio-msic.c
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@ -266,8 +266,8 @@ static int platform_msic_gpio_probe(struct platform_device *pdev)
int i;
if (irq < 0) {
dev_err(dev, "no IRQ line\n");
return -EINVAL;
dev_err(dev, "no IRQ line: %d\n", irq);
return irq;
}
if (!pdata || !pdata->gpio_base) {