Re: RFC : mmc : Use wait_for_completion_timeout() instead ofwait_for_completion in case of multiple write blocks.

[Linus Walleij]

2011/9/2 NamJae Jeon <linkinjeon@xxxxxxxxx>:

> We should consider DMA situation. As I know, host controller can not
> rise timeout interrupt in write not read in DMA status.

Which host controller are you talking about?

> host
> controller can just know whether card is finish to program to use busy
> line. If unstable card is holding busy line while writing using DMA,
> hang problem will happen by wait_for_completion.
> so I think that mmc driver need some exception to avoid this problem.

Yes you can add a timeout in the driver itself. Just set up
a common timer, no big deal.

Yours,
Linus Walleij
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