* [PATCH] drivers/gpio: Check return value to silence warning
@ 2014-08-07 4:40 Nick Krause
2014-08-07 4:45 ` Alexandre Courbot
0 siblings, 1 reply; 2+ messages in thread
From: Nick Krause @ 2014-08-07 4:40 UTC (permalink / raw)
To: Linus Walleij, Alexandre Courbot, open list:GPIO SUBSYSTEM, open list
Check for return value to fix the following error
drivers/gpio/gpio-sch311x.c: In function 'sch311x_gpio_probe':
drivers/gpio/gpio-sch311x.c:286:18: warning: ignoring return value of
'gpiochip_remove', declared with attribute warn_unused_result [-Wunused-result]
in the context we do not need to check but checking makes compiler happy.
With help from kernelnewbies.
Signed-off-by: Nick Krause <xerofoify@gmail.com>
---
drivers/gpio/gpio-sch311x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-sch311x.c b/drivers/gpio/gpio-sch311x.c
index f942b80..af35e99 100644
--- a/drivers/gpio/gpio-sch311x.c
+++ b/drivers/gpio/gpio-sch311x.c
@@ -283,7 +283,7 @@ exit_err:
release_region(pdata->runtime_reg + GP1, 6);
/* release already registered chips */
for (--i; i >= 0; i--)
- gpiochip_remove(&priv->blocks[i].chip);
+ WARN_ON(gpiochip_remove(&priv->blocks[i].chip));
return err;
}
--
2.0.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] drivers/gpio: Check return value to silence warning
2014-08-07 4:40 [PATCH] drivers/gpio: Check return value to silence warning Nick Krause
@ 2014-08-07 4:45 ` Alexandre Courbot
0 siblings, 0 replies; 2+ messages in thread
From: Alexandre Courbot @ 2014-08-07 4:45 UTC (permalink / raw)
To: Nick Krause; +Cc: Linus Walleij, open list:GPIO SUBSYSTEM, open list
On Thu, Aug 7, 2014 at 1:40 PM, Nick Krause <xerofoiify@gmail.com> wrote:
> Check for return value to fix the following error
>
> drivers/gpio/gpio-sch311x.c: In function 'sch311x_gpio_probe':
> drivers/gpio/gpio-sch311x.c:286:18: warning: ignoring return value of
> 'gpiochip_remove', declared with attribute warn_unused_result [-Wunused-result]
>
> in the context we do not need to check but checking makes compiler happy.
> With help from kernelnewbies.
This patch is not needed: the warn_unused_result has been removed for
3.17, and gpiochip_remove will be changed to return void soon anyway.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-08-07 4:40 [PATCH] drivers/gpio: Check return value to silence warning Nick Krause
2014-08-07 4:45 ` Alexandre Courbot
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