linux-kernel - Re: [PATCH] clocksource: fsl: avoid harmless 64-bit warnings

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Date:	Tue, 17 Nov 2015 10:37:40 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Xiubo Li <Li.Xiubo@...escale.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	Stefan Agner <stefan@...er.ch>
Subject: Re: [PATCH] clocksource: fsl: avoid harmless 64-bit warnings

On 11/16/2015 05:34 PM, Arnd Bergmann wrote:
> The ftm_clockevent_init passes the value of "~0UL" into a function
> that takes a 32-bit argument, which drops the upper 32 bits, as
> gcc warns about on ARM64:
>
> clocksource/fsl_ftm_timer.c: In function 'ftm_clockevent_init':
> clocksource/fsl_ftm_timer.c:206:13: warning: large integer implicitly truncated to unsigned type [-Woverflow]
>
> This was obviously unintended behavior, and is easily avoided by
> using '~0u' as the integer literal, because that is 32-bit wide
> on all architectures.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Thanks Arnd for the fix. I will apply it on top of branch.


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