From: Dmitry Antipov <dmitry.antipov@linaro.org>
To: Sujit Reddy Thumma <sthumma@codeaurora.org>
Cc: linaro-dev@lists.linaro.org, patches@linaro.org,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mmc: use usleep_range() in mmc_delay()
Date: Wed, 21 Dec 2011 17:05:02 +0400 [thread overview]
Message-ID: <4EF1D97E.3000201@linaro.org> (raw)
In-Reply-To: <4EF1C230.6060005@codeaurora.org>
On 12/21/2011 03:25 PM, Sujit Reddy Thumma wrote:
> I have posted similar patch some time back.
> http://comments.gmane.org/gmane.linux.ports.arm.msm/2119.
>
> Would you like to comment on that?
- I believe we should forget about jiffies, HZ and other similar obsolete
timekeeping stuff;
- I have no ideas where did you get 'most typical' 20 ms. MMC subsystem uses
mmc_delay() with two compile-time fixed values 1 and 10 ms, with the only
exception of card-dependent sleep/awake timeout. I was unable to find a table
with typical values, but it's rounded up to >= 1 ms anyway.
Dmitry
next prev parent reply other threads:[~2011-12-21 13:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-21 6:56 [PATCH] mmc: use usleep_range() in mmc_delay() Dmitry Antipov
2011-12-21 11:25 ` Sujit Reddy Thumma
2011-12-21 13:05 ` Dmitry Antipov [this message]
2011-12-27 4:40 ` Sujit Reddy Thumma
2012-01-13 13:22 ` Aaro Koskinen
2012-01-13 13:51 ` Dmitry Antipov
2012-01-13 14:52 ` Aaro Koskinen
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