From: Nicholas Mc Guire <der.herr@hofr.at>
To: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Nicholas Mc Guire <hofrat@osadl.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Hans Verkuil <hans.verkuil@cisco.com>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] [media] s5k6aa: set usleep_range greater 0
Date: Thu, 15 Dec 2016 01:14:05 +0000 [thread overview]
Message-ID: <20161215011405.GB22190@osadl.at> (raw)
In-Reply-To: <fe6f6e06-be7a-9a66-7723-7b37a0ae1675@samsung.com>
On Tue, Dec 13, 2016 at 03:53:47PM +0100, Sylwester Nawrocki wrote:
> Hi Laurent,
>
> On 12/13/2016 03:10 PM, Laurent Pinchart wrote:
> > As pointed out by Ian Arkver, the datasheet states the delay should be >50µs.
> > Would it make sense to reduce the sleep duration to (3000, 4000) for instance
> > (or possibly even lower), instead of increasing it ?
>
> Theoretically it would make sense, I believe the delay call should really
> be part of the set_power callback. I think it is safe to decrease the
> delay value now, the boards using that driver have been dropped with commit
>
> commit ca9143501c30a2ce5886757961408488fac2bb4c
> ARM: EXYNOS: Remove unused board files
>
> As far as I am concerned you can do whatever you want with that delay
> call, remove it or decrease value, whatever helps to stop triggering
> warnings from the static analysis tools.
>
if its actually unused then it might be best to completely drop the code
raher than fixing up dead-code. Is the EXYNOS the only system that had
this device in use ? If it shold stay in then setting it to the above
proposed 3000, 4000 would seem the most resonable to me as I asume this
change would stay untested.
thx!
hofrat
next prev parent reply other threads:[~2016-12-15 1:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20161213015743epcas3p19867fa74e5ffe2974364d317d9b494f6@epcas3p1.samsung.com>
2016-12-13 1:58 ` [PATCH RFC] [media] s5k6aa: set usleep_range greater 0 Nicholas Mc Guire
2016-12-13 9:43 ` Sakari Ailus
2016-12-13 10:10 ` Ian Arkver
2016-12-13 10:54 ` Sakari Ailus
2016-12-13 12:38 ` Sylwester Nawrocki
2016-12-13 14:10 ` Laurent Pinchart
2016-12-13 14:53 ` Sylwester Nawrocki
2016-12-15 1:14 ` Nicholas Mc Guire [this message]
2016-12-15 17:45 ` Sylwester Nawrocki
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