linux-kernel - RE: [PATCH] usb/core/hub.c: fix sparse warnings

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Message-ID: <BD79186B4FD85F4B8E60E381CAEE19090165EFB9@mi8nycmail19.Mi8.com>
Date:	Wed, 22 Apr 2009 13:25:32 -0400
From:	"H Hartley Sweeten" <hartleys@...ionengravers.com>
To:	"Greg KH" <greg@...ah.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH]  usb/core/hub.c: fix sparse warnings

On Tuesday, April 21, 2009 10:51 PM, Greg KH wrote:
> On Wed, Apr 15, 2009 at 09:44:44PM -0400, H Hartley Sweeten wrote:
>> Fix sparse warning in drivers/usb/core/hub.c.
>> 
>> 	warning: symbol 'temp' shadows an earlier one
>
> Odd, I'm not seeing that when I run sparse on this file.  What
> version of sparse are you using?

Not sure about the sparse version.  I obtained the most recent version
with git on 15 Apr 2009.

I just rechecked the original file and I do see the warning.

  CHECK   drivers/usb/core/hub.c
drivers/usb/core/hub.c:472:3: warning: symbol 'temp' shadows an earlier
One drivers/usb/core/hub.c:460:20: originally declared here

This was found on a EP93xx ARM platform. It appears the sparse warning 
is caused by the raw_local_irq_save() macro in
arch/arm/include/asm/irqflags.h.

> Also, the patch is line-wrapped and you delete a lot of trailing
> spaces. Deleting trailing spaces is nice, but that's not what you
> said you were doing here in this patch, so I'm going to have to
> drop it.

Sorry about the line-wrapping. I'm still trying to work that out.

I noticed the trailing spaces getting fixed in the patch. I didn't
know I had to mention that in the patch description. Again sorry.

> thanks,
>
> greg k-h

Regards,
Hartley
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