On Tue, May 21, 2019 at 3:04 AM Andrzej Pietrasiewicz
wrote:
>
> One thing that becomes evident now is that adb uses async io.
> It seems that interaction of async io and s-g mode should be further
> investigated.
Although on our devices, we have async io disabled w/ adb, as there is
an existing/
Hi,
W dniu 20.05.2019 o 23:52, Yang, Fei pisze:
One question that comes to my mind is this: Does the USB
One of the problems appears to be that req->num_mapped_sgs was left
uninitialized. I made the following change and got a lot more requests completed.
However this change is not suffici
One question that comes to my mind is this: Does the USB
transmission stall (e.g. endpoint stall) or not? In other words, is
adb connection broken because USB stops transmitting anything, or
because the data is transmitted but its integrity is broken during
transmission
On Mon, May 20, 2019 at 9:23 AM Yang, Fei wrote:
>
> >> One question that comes to my mind is this: Does the USB transmission
> >> stall (e.g. endpoint stall) or not? In other words, is adb connection
> >> broken because USB stops transmitting anything, or because the data is
> >> transmitted but
>> One question that comes to my mind is this: Does the USB transmission
>> stall (e.g. endpoint stall) or not? In other words, is adb connection
>> broken because USB stops transmitting anything, or because the data is
>> transmitted but its integrity is broken during transmission and that
>>
Hi John,
Is there anything else I can try for you?
Have you tried compiling FunctionFS with debugging enabled?
You do so bu uncommenting:
/* #define DEBUG */
/* #define VERBOSE_DEBUG */
at the beginning of drivers/usb/gadget/function/f_fs.c
Is there anything suspicious in the kernel log w
Hi,
W dniu 13.05.2019 o 20:09, John Stultz pisze:
On Mon, May 13, 2019 at 7:08 AM Andrzej Pietrasiewicz
wrote:
Do you get "functionfs read size 512 > requested size 24, splitting
request into multiple reads" message when problems happen?
Unfortunately no.
Actually that's a fortunate o
On Thu, May 9, 2019 at 11:25 AM John Stultz wrote:
>
> On Thu, May 9, 2019 at 7:02 AM Andrzej Pietrasiewicz
> wrote:
> >
> > Hi John,
> > W dniu 08.05.2019 o 04:18, John Stultz pisze:
> > > Since commit 772a7a724f69 ("usb: gadget: f_fs: Allow scatter-gather
> > > buffers"), I've been seeing troub
Hi John,
W dniu 08.05.2019 o 04:18, John Stultz pisze:
Since commit 772a7a724f69 ("usb: gadget: f_fs: Allow scatter-gather
buffers"), I've been seeing trouble with adb transfers in Android on
HiKey960, HiKey and now Dragonboard 845c.
Sometimes things crash, but often the transfers just stop w/o
On Wed, May 8, 2019 at 12:01 AM Andrzej Pietrasiewicz
wrote:
> W dniu 08.05.2019 o 04:18, John Stultz pisze:
> > Andrzej: Do you have any ideas or suggestions on this? I'm happy to
> > test or run any debug patches, if it would help narrow the issue down.
> >
>
> There is a patch:
>
> https://www.
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