linux-kernel - Re: [PATCH V3 2/4] ARM: smp_twd: mpcore

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Date:	Thu, 7 Jul 2011 14:44:19 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Vitaly Kuzmichev <vkuzmichev@...sta.com>
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-watchdog@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	Wim Van Sebroeck <wim@...ana.be>,
	Marc Zyngier <marc.zyngier@....com>,
	Colin Cross <ccross@...roid.com>, linux-kernel@...r.kernel.org,
	Valentine Barshak <vbarshak@...sta.com>
Subject: Re: [PATCH V3 2/4] ARM: smp_twd: mpcore_wdt: Fix watchdog counter loading

On Thursday 07 July 2011, Vitaly Kuzmichev wrote:
> Although the commit "98af057092f8f0dabe63c5df08adc2bbfbddb1d2
>  ARM: 6126/1: ARM mpcore_wdt: fix build failure and other fixes"
> resolved long standing mpcore_wdt driver build problems, it
> introduced an error in the relationship between the MPcore watchdog
> timer clock rate and mpcore_margin, "MPcore timer margin in seconds",
> such that watchdog timeouts are now arbitrary rather than the number
> of seconds specified by mpcore_margin.
> 
> This change restores mpcore_wdt_keepalive() to its equivalent
> implementation prior to commit 98af057 such that watchdog timeouts now
> occur as specified by mpcore_margin.
> 
> The variable 'mpcore_timer_rate' which caused that build failure was
> replaced by 'twd_timer_rate'. Adding exported function to obtain
> 'twd_timer_rate' value in mpcore_wdt driver.
> 
> MPCORE_WATCHDOG needed to build 'mpcore_wdt' already depends on
> HAVE_ARM_TWD needed to build 'smp_twd', so from the point of view of
> 'mpcore_wdt' driver the exported function will always exist.
> 
> Signed-off-by: Valentine Barshak <vbarshak@...sta.com>
> Signed-off-by: Vitaly Kuzmichev <vkuzmichev@...sta.com>

Looks good now,

Acked-by: Arnd Bergmann <arnd@...db.de>
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