* [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe
@ 2022-01-14 6:48 Miaoqian Lin
2022-01-16 12:06 ` Linus Walleij
2022-01-17 13:19 ` Bartosz Golaszewski
0 siblings, 2 replies; 3+ messages in thread
From: Miaoqian Lin @ 2022-01-14 6:48 UTC (permalink / raw)
To: Linus Walleij, Bartosz Golaszewski, Ran Wang, Andy Shevchenko,
linux-gpio, linux-kernel
Cc: linmq006
platform_get_irq() returns negative error number instead 0 on failure.
And the doc of platform_get_irq() provides a usage example:
int irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
Fix the check of return value to catch errors correctly.
Fixes: 76c47d1449fc ("gpio: mpc8xxx: Add ACPI support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
drivers/gpio/gpio-mpc8xxx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 70d6ae20b1da..01634c8d27b3 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -388,8 +388,8 @@ static int mpc8xxx_probe(struct platform_device *pdev)
}
mpc8xxx_gc->irqn = platform_get_irq(pdev, 0);
- if (!mpc8xxx_gc->irqn)
- return 0;
+ if (mpc8xxx_gc->irqn < 0)
+ return mpc8xxx_gc->irqn;
mpc8xxx_gc->irq = irq_domain_create_linear(fwnode,
MPC8XXX_GPIO_PINS,
--
2.17.1
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe
2022-01-14 6:48 [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe Miaoqian Lin
@ 2022-01-16 12:06 ` Linus Walleij
2022-01-17 13:19 ` Bartosz Golaszewski
1 sibling, 0 replies; 3+ messages in thread
From: Linus Walleij @ 2022-01-16 12:06 UTC (permalink / raw)
To: Miaoqian Lin
Cc: Bartosz Golaszewski, Ran Wang, Andy Shevchenko, linux-gpio, linux-kernel
On Fri, Jan 14, 2022 at 7:48 AM Miaoqian Lin <linmq006@gmail.com> wrote:
> platform_get_irq() returns negative error number instead 0 on failure.
> And the doc of platform_get_irq() provides a usage example:
>
> int irq = platform_get_irq(pdev, 0);
> if (irq < 0)
> return irq;
>
> Fix the check of return value to catch errors correctly.
>
> Fixes: 76c47d1449fc ("gpio: mpc8xxx: Add ACPI support")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe
2022-01-14 6:48 [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe Miaoqian Lin
2022-01-16 12:06 ` Linus Walleij
@ 2022-01-17 13:19 ` Bartosz Golaszewski
1 sibling, 0 replies; 3+ messages in thread
From: Bartosz Golaszewski @ 2022-01-17 13:19 UTC (permalink / raw)
To: Miaoqian Lin
Cc: Linus Walleij, Ran Wang, Andy Shevchenko,
open list:GPIO SUBSYSTEM, Linux Kernel Mailing List
On Fri, Jan 14, 2022 at 7:48 AM Miaoqian Lin <linmq006@gmail.com> wrote:
>
> platform_get_irq() returns negative error number instead 0 on failure.
> And the doc of platform_get_irq() provides a usage example:
>
> int irq = platform_get_irq(pdev, 0);
> if (irq < 0)
> return irq;
>
> Fix the check of return value to catch errors correctly.
>
> Fixes: 76c47d1449fc ("gpio: mpc8xxx: Add ACPI support")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
> ---
> drivers/gpio/gpio-mpc8xxx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
> index 70d6ae20b1da..01634c8d27b3 100644
> --- a/drivers/gpio/gpio-mpc8xxx.c
> +++ b/drivers/gpio/gpio-mpc8xxx.c
> @@ -388,8 +388,8 @@ static int mpc8xxx_probe(struct platform_device *pdev)
> }
>
> mpc8xxx_gc->irqn = platform_get_irq(pdev, 0);
> - if (!mpc8xxx_gc->irqn)
> - return 0;
> + if (mpc8xxx_gc->irqn < 0)
> + return mpc8xxx_gc->irqn;
>
> mpc8xxx_gc->irq = irq_domain_create_linear(fwnode,
> MPC8XXX_GPIO_PINS,
> --
> 2.17.1
>
Queued for fixes, thanks!
Bart
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-01-17 13:19 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2022-01-14 6:48 [PATCH] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe Miaoqian Lin
2022-01-16 12:06 ` Linus Walleij
2022-01-17 13:19 ` Bartosz Golaszewski
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