linux-kernel - Re: [PATCH] staging: wlan-ng: fix Missing a blank line after declarations warnings

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Date:	Fri, 13 Jun 2014 10:37:20 -0700
From:	Joe Perches <joe@...ches.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Cheng-Wei Lee <lee.rhapsody@...il.com>,
	Sherif Shehab Aldin <shehabaldin.sherif@...il.com>,
	Avinash Kumar <avi.kp.137@...il.com>,
	Peter Senna Tschudin <peter.senna@...il.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: wlan-ng: fix Missing a blank line after
 declarations warnings

On Fri, 2014-06-13 at 10:15 -0700, Greg Kroah-Hartman wrote:
> On Fri, Jun 13, 2014 at 10:58:14PM +0800, Cheng-Wei Lee wrote:
> > Signed-off-by: Quentin Lee <lee.rhapsody@...il.com>
[]
> > diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c
[]
> > @@ -3533,7 +3533,6 @@ static void hfa384x_usbin_rx(wlandevice_t
> > *wlandev, struct sk_buff *skb)
> >  	}
> > 
> >  done:
> > -	return;
> >  }
> 
> That's a good thing to do, but it is not what you said you did up above
> in the changelog entry.

I don't believe it's a good thing to do at all.
I suspect more that this wasn't compile tested.

This doesn't compile for at least several
supported gcc versions. 

gcc doesn't (didn't? I haven't tried 4.9) like:

label:
}

to terminate a function definition.

$ cat label_test.c
void func(void)
{
	goto label;
label:
}
$

with gcc 4.8:

$ gcc label_test.c
label_test.c: In function ‘func’:
label_test.c:5:1: error: label at end of compound statement
 label:
 ^

whereas this compiles fine:

$ cat label_test2.c
void func(void)
{
	goto label;
label:
	;
}
$

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