[U-Boot] UMS - maintain connection

[U-Boot] UMS - maintain connection

[John Tobias]

Hello All,

I am using ums (USB Mass Storage) in u-boot to expose the storage of
my device into my host machine. Everything works okay except when the
host machine wakeup from the sleep - my device got disconnect from
host after it received an resume signal.

I tried the g_mass_storage driver in the kernel and it works fine. It
never disconnect when the host machine goes to sleep and wake it up.

Does anyone have encountered the said issue?. How did you fix it?.

Regards,

John

[U-Boot] UMS - maintain connection

[Lukasz Majewski]

Hi John Tobias,

> Hello All,
> 
> I am using ums (USB Mass Storage) in u-boot to expose the storage of
> my device into my host machine. Everything works okay except when the
> host machine wakeup from the sleep - my device got disconnect from
> host after it received an resume signal.
> 
> I tried the g_mass_storage driver in the kernel and it works fine. It
> never disconnect when the host machine goes to sleep and wake it up.
> 
> Does anyone have encountered the said issue?.

Frankly speaking, I did not anticipate such test case.

You probably connect to your laptop, which may go sleep?

> How did you fix it?.

(For now) no solution... I need to investigate this issue.

> 
> Regards,
> 
> John

Best regards,
?ukasz Majewski
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[U-Boot] UMS - maintain connection

[John Tobias]

Hi ?ukasz Majewski,


On Mon, Aug 15, 2016 at 6:17 AM, Lukasz Majewski <l.majewski@majess.pl> wrote:
> Hi John Tobias,
>
>> Hello All,
>>
>> I am using ums (USB Mass Storage) in u-boot to expose the storage of
>> my device into my host machine. Everything works okay except when the
>> host machine wakeup from the sleep - my device got disconnect from
>> host after it received an resume signal.
>>
>> I tried the g_mass_storage driver in the kernel and it works fine. It
>> never disconnect when the host machine goes to sleep and wake it up.
>>
>> Does anyone have encountered the said issue?.
>
> Frankly speaking, I did not anticipate such test case.
>
> You probably connect to your laptop, which may go sleep?

Yes, that is correct.

>
>> How did you fix it?.
>
> (For now) no solution... I need to investigate this issue.
>

Btw, problem happened in iMX6 processor.


>>
>> Regards,
>>
>> John
>
> Best regards,
> ?ukasz Majewski

[U-Boot] UMS - maintain connection

[John Tobias]

Hi ?ukasz Majewski,

I got it working. I may submit a fix soon.

Regards,

John

On Mon, Aug 15, 2016 at 6:17 AM, Lukasz Majewski <l.majewski@majess.pl> wrote:
> Hi John Tobias,
>
>> Hello All,
>>
>> I am using ums (USB Mass Storage) in u-boot to expose the storage of
>> my device into my host machine. Everything works okay except when the
>> host machine wakeup from the sleep - my device got disconnect from
>> host after it received an resume signal.
>>
>> I tried the g_mass_storage driver in the kernel and it works fine. It
>> never disconnect when the host machine goes to sleep and wake it up.
>>
>> Does anyone have encountered the said issue?.
>
> Frankly speaking, I did not anticipate such test case.
>
> You probably connect to your laptop, which may go sleep?
>
>> How did you fix it?.
>
> (For now) no solution... I need to investigate this issue.
>
>>
>> Regards,
>>
>> John
>
> Best regards,
> ?ukasz Majewski

[U-Boot] UMS - maintain connection

[Fabio Estevam]

Hi John,

On Wed, Aug 17, 2016 at 5:01 PM, John Tobias <john.tobias.ph@gmail.com> wrote:
> Hi ?ukasz Majewski,
>
> I got it working. I may submit a fix soon.

Care to submit your fix?

Regards,

Fabio Estevam