On Mon, Sep 5, 2011 at 2:30 AM, NamJae Jeon wrote:
>>> 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
2011/9/4 Linus Walleij :
> 2011/9/2 NamJae Jeon :
>
>> 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?
As I know, this controller is using on many ARM core. I can not
dis
2011/9/2 NamJae Jeon :
> 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
2011/8/30 Linus Walleij :
> On Thu, Aug 25, 2011 at 6:44 AM, NamJae Jeon wrote:
>
>> If card is infinitely holding pull down busy line(data 0) while
>> writing multiple blocks, write will be blocked in
>> mmc_wait_for_req_done().
>> I suggest to use wait_for_completion_timeout instread of
>> wait_
On Thu, Aug 25, 2011 at 6:44 AM, NamJae Jeon wrote:
> If card is infinitely holding pull down busy line(data 0) while
> writing multiple blocks, write will be blocked in
> mmc_wait_for_req_done().
> I suggest to use wait_for_completion_timeout instread of
> wait_for_completion like the below code
Hi.
If card is infinitely holding pull down busy line(data 0) while
writing multiple blocks, write will be blocked in
mmc_wait_for_req_done().
I suggest to use wait_for_completion_timeout instread of
wait_for_completion like the below code.
How do you think about my suggestion ?
Thanks.
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