pinctrl: amd: fix error return code in amd_gpio_probe()

Submitted by Gustavo A. R. Silva on Aug. 9, 2017, 4:09 p.m.

Details

Message ID 20170809160933.GA29055@embeddedgus
State New
Headers show

Commit Message

Gustavo A. R. Silva Aug. 9, 2017, 4:09 p.m.
platform_get_irq() returns an error code, but the pinctrl-amd driver
ignores it and always returns -EINVAL. This is not correct and,
prevents -EPROBE_DEFER from being propagated properly.

Print and propagate the return value of platform_get_irq on failure.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/pinctrl/pinctrl-amd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Linus Walleij Aug. 22, 2017, 12:25 p.m.
On Wed, Aug 9, 2017 at 6:09 PM, Gustavo A. R. Silva
<gustavo@embeddedor.com> wrote:

> platform_get_irq() returns an error code, but the pinctrl-amd driver
> ignores it and always returns -EINVAL. This is not correct and,
> prevents -EPROBE_DEFER from being propagated properly.
>
> Print and propagate the return value of platform_get_irq on failure.
>
> This issue was detected with the help of Coccinelle.
>
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Patch applied.

Yours,
Linus Walleij
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diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index e6779d4..38af1ec 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -760,8 +760,8 @@  static int amd_gpio_probe(struct platform_device *pdev)
 
 	irq_base = platform_get_irq(pdev, 0);
 	if (irq_base < 0) {
-		dev_err(&pdev->dev, "Failed to get gpio IRQ.\n");
-		return -EINVAL;
+		dev_err(&pdev->dev, "Failed to get gpio IRQ: %d\n", irq_base);
+		return irq_base;
 	}
 
 	gpio_dev->pdev = pdev;