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Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit warnings

From Daniel Lezcano <daniel.lezcano@linaro.org>
Newsgroups linux.kernel
Subject Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit warnings
Date 2015-11-17 12:30 +0100
Message-ID <qvMCt-4n1-9@gated-at.bofh.it> (permalink)
References <qvuYX-1eV-31@gated-at.bofh.it> <qvLQ6-3NL-7@gated-at.bofh.it>
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On 11/17/2015 11:36 AM, tip-bot for Arnd Bergmann wrote:
> Commit-ID:  dde7632ed02382e4bac2b57c66ee2285764f2cd7
> Gitweb:     http://git.kernel.org/tip/dde7632ed02382e4bac2b57c66ee2285764f2cd7
> Author:     Arnd Bergmann <arnd@arndb.de>
> AuthorDate: Mon, 16 Nov 2015 17:34:50 +0100
> Committer:  Thomas Gleixner <tglx@linutronix.de>
> CommitDate: Mon, 16 Nov 2015 19:07:08 +0100
>
> clocksource/fsl: Avoid harmless 64-bit warnings
>
> 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@arndb.de>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: Xiubo Li <Li.Xiubo@freescale.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Sascha Hauer <kernel@pengutronix.de>
> Cc: Stefan Agner <stefan@agner.ch>
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Link: http://lkml.kernel.org/r/3990834.xnjhm37Grs@wuerfel
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
>
> ---

Ok, I dropped the patch from my tree.

   -- Daniel


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Thread

[PATCH] clocksource: fsl: avoid harmless 64-bit warnings Arnd Bergmann <arnd@arndb.de> - 2015-11-16 17:40 +0100
  Re: [PATCH] clocksource: fsl: avoid harmless 64-bit warnings Daniel Lezcano <daniel.lezcano@linaro.org> - 2015-11-17 10:40 +0100
  [tip:timers/urgent] clocksource/fsl:   Avoid harmless 64-bit warnings tip-bot for Arnd Bergmann <tipbot@zytor.com> - 2015-11-17 11:40 +0100
    Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit  warnings Daniel Lezcano <daniel.lezcano@linaro.org> - 2015-11-17 12:30 +0100
      Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit  warnings Thomas Gleixner <tglx@linutronix.de> - 2015-11-17 12:40 +0100
        Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit  warnings Daniel Lezcano <daniel.lezcano@linaro.org> - 2015-11-17 12:50 +0100
        Re: [tip:timers/urgent] clocksource/fsl: Avoid harmless 64-bit  warnings Daniel Lezcano <daniel.lezcano@linaro.org> - 2015-11-17 12:50 +0100

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