Re: [PATCH] mmc: use usleep_range() in mmc_delay()
From: Dmitry Antipov
Date: Wed Dec 21 2011 - 08:04:27 EST
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
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