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Date: Mon, 19 Feb 2018 09:37:14 -0800
From: Richard Cochran <richardcochran@gmail.com>
To: David Laight <David.Laight@ACULAB.COM>
Cc: 'Colin King' <colin.king@canonical.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "kernel-janitors@vger.kernel.org" <kernel-janitors@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH][V2] net: dsa: mv88e6xxx: avoid unintended sign extension
 on a 16 bit shift
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 <a97bab4dc79c4b7da76826843909cae9@AcuMS.aculab.com>
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On Mon, Feb 19, 2018 at 12:19:16PM +0000, David Laight wrote:
> This seems to be somewhat excessive 64bit maths on a 32bit system.
> It is more than enough to make timelo/timehi 'unsigned int'.

Do you see a difference in the generated code?

Thanks,
Richard