Re: [PATCH v2] mmc: tmio: Fix timeout value for command request

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On Mon, Jul 20, 2015 at 5:08 PM, Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> wrote:
> Hi Leon,
>
> 2015-07-20 14:03 GMT+09:00 Leon Romanovsky <leon@xxxxxxx>:
>> On Sun, Jul 19, 2015 at 7:39 PM, Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> wrote:
>>> From: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
>>>
>>> Fix the problem which timeout occurs at the time of command request with
>>> several cards.
>> Hi Yoshihiro,
>> I afraid that I missed the answer to my concern about such cards [1].
>> It is good to write this information in commit message and/or comment
>> in the code.
>>
>> It is extremely valuable to know which cards are required x2.5 timeout increase.
>
> I apologize for the lack of information.
> However, I have not yet obtained information about which cards corresponds to.
> I intend to update the commit message if I obtain information.
Please don't hesitate to resend this patch when you will get such information.

Thanks.


>
> Thanks,
> Kaneko
>
>>
>> [1] http://www.spinics.net/lists/linux-mmc/msg32295.html
>>
>>>
>>> The timeout value was insufficient as a verification of several cards,
>>> so it was changed 5 seconds from 2 seconds.
>>>
>>> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
>>> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
>>> ---
>>>
>>> This patch is based on mmc-next branch of Ulf Hansson's mmc tree.
>>>
>>> v2 [Yoshihiro Kaneko]
>>> * As suggested by Wolfram Sang
>>> - use a definition instead of a magic value
>>>
>>>  drivers/mmc/host/tmio_mmc_pio.c | 6 ++++--
>>>  1 file changed, 4 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
>>> index e3dcf31..a10fde4 100644
>>> --- a/drivers/mmc/host/tmio_mmc_pio.c
>>> +++ b/drivers/mmc/host/tmio_mmc_pio.c
>>> @@ -83,6 +83,8 @@ static int tmio_mmc_next_sg(struct tmio_mmc_host *host)
>>>         return --host->sg_len;
>>>  }
>>>
>>> +#define CMDREQ_TIMEOUT 5000
>>> +
>>>  #ifdef CONFIG_MMC_DEBUG
>>>
>>>  #define STATUS_TO_TEXT(a, status, i) \
>>> @@ -230,7 +232,7 @@ static void tmio_mmc_reset_work(struct work_struct *work)
>>>          */
>>>         if (IS_ERR_OR_NULL(mrq)
>>>             || time_is_after_jiffies(host->last_req_ts +
>>> -               msecs_to_jiffies(2000))) {
>>> +               msecs_to_jiffies(CMDREQ_TIMEOUT))) {
>>>                 spin_unlock_irqrestore(&host->lock, flags);
>>>                 return;
>>>         }
>>> @@ -818,7 +820,7 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
>>>         ret = tmio_mmc_start_command(host, mrq->cmd);
>>>         if (!ret) {
>>>                 schedule_delayed_work(&host->delayed_reset_work,
>>> -                                     msecs_to_jiffies(2000));
>>> +                                     msecs_to_jiffies(CMDREQ_TIMEOUT));
>>>                 return;
>>>         }
>>>
>>> --
>>> 1.9.1
>>>
>>> --
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>>
>>
>>
>> --
>> Leon Romanovsky | Independent Linux Consultant
>>         www.leon.nu | leon@xxxxxxx



-- 
Leon Romanovsky | Independent Linux Consultant
        www.leon.nu | leon@xxxxxxx
--
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