linux-kernel - Re: [PATCH] watchdog: dw

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Date:	Tue, 12 Apr 2016 19:09:28 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	Wim Van Sebroeck <wim@...ana.be>,
	Haavard Skinnemoen <hskinnemoen@...il.com>,
	Hans-Christian Egtvedt <egtvedt@...fundet.no>
CC:	linux-kernel@...r.kernel.org, kernel-testers@...r.kernel.org,
	linux-watchdog@...r.kernel.org
Subject: Re: [PATCH] watchdog: dw_wdt: dont build for avr32

On Tuesday 12 April 2016 06:36 PM, Guenter Roeck wrote:
> On 04/11/2016 10:51 PM, Sudip Mukherjee wrote:
>> The build of avr32 allmodconfig fails with the error:
>> ERROR: "__avr32_udiv64" [drivers/watchdog/kempld_wdt.ko] undefined!
>>
> This means there is a direct 64 bit divide operation in the driver,
> which we should identify and fix.

yes, there is.

in function: kempld_wdt_set_stage_timeout()
remainder = do_div(stage_timeout64, prescaler);

Any idea how to fix it?

regards
sudip