From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Warren <swarren@wwwdotorg.org>
Date: Mon, 12 Aug 2013 09:46:57 -0600
Subject: [U-Boot] [PATCH v8 RESEND 2/2] console: usb: kbd: To improve
 TFTP booting performance
In-Reply-To: <201308112008.33488.marex@denx.de>
References: <1376051599-7644-1-git-send-email-jilin@nvidia.com>
	<201308112008.33488.marex@denx.de>
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On 08/11/2013 12:08 PM, Marek Vasut wrote:
> Dear Jim Lin,
> 
>> TFTP booting is slow when a USB keyboard is installed and
>> stdin has usbkbd added.
>> This fix is to change Ctrl-C polling for USB keyboard to every second
>> when NET transfer is running.

>> diff --git a/include/usb.h b/include/usb.h

>> +extern int __maybe_unused net_busy_flag;
> 
> I wonder what would happen if you declared it here as
> 
> static int __maybe_unused
> 
> Would it have some side-effects?

Then each file that includes this header will get a separate copy of the
variable.