linux-kernel - Re: [PATCH 4/7] [media] exynos4-is: use monotonic timestamps as advertized

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Message-id: <55F92E8C.3020701@samsung.com>
Date:	Wed, 16 Sep 2015 10:55:40 +0200
From:	Sylwester Nawrocki <s.nawrocki@...sung.com>
To:	Arnd Bergmann <arnd@...db.de>, linux-media@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, y2038@...ts.linaro.org,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-api@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 4/7] [media] exynos4-is: use monotonic timestamps as
 advertized

On 15/09/15 17:49, Arnd Bergmann wrote:
> The exynos4 fimc capture driver claims to use monotonic
> timestamps but calls ktime_get_real_ts(). This is both
> an incorrect API use, and a bad idea because of the y2038
> problem and the fact that the wall clock time is not reliable
> for timestamps across suspend or settimeofday().
> 
> This changes the driver to use the normal v4l2_get_timestamp()
> function like all other drivers.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Acked-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
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