Re: [PATCH] mmc: omap_hsmmc: set dto to 14 for all devices

[Chris Ball <cjb@laptop.org>]

Hi Paul,

On Mon, Mar 12 2012, Paul Walmsley wrote:
> I don't think this is the right fix.  Steve Sakoman and I discussed this a 
> few months ago -- we did some debugging and Steve observed the timeouts on 
> multiple block writes (0x19):
> [...]
> So perhaps something like the following patch instead?  Unfortunately, I 
> don't have one of these crappy SD cards as far as I know, so I can't 
> really test it.
>
>
> - Paul
>
> From: Paul Walmsley <paul@pwsan.com>
> Date: Mon, 12 Mar 2012 04:46:29 -0600
> Subject: [PATCH] mmc: use really long write timeout to deal with crappy cards
>
> Several people have noticed that crappy SD cards take much longer to
> complete multiple block writes than the 300ms that Linux specifies.
> Try to work around this by using a three second write timeout instead.
>
> <insert Chase's patch description here>
>
> Not-yet-signed-off-by: Paul Walmsley <paul@pwsan.com>

Sounds like a good idea -- want to send a signed-off patch for this?

Thanks,

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child