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Groups > linux.kernel > #1402771 > unrolled thread

4.5-rc0 regression: GPRS breaks after very short while

Started byPavel Machek <pavel@ucw.cz>
First post2016-05-18 09:50 +0200
Last post2016-05-20 06:20 +0200
Articles 4 — 2 participants

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  4.5-rc0 regression: GPRS breaks after very short while Pavel Machek <pavel@ucw.cz> - 2016-05-18 09:50 +0200
    Re: 4.5-rc0 regression: GPRS breaks after very short while Sebastian Reichel <sre@kernel.org> - 2016-05-18 16:20 +0200
      Re: 4.5-rc0 regression: GPRS breaks after very short while Pavel Machek <pavel@ucw.cz> - 2016-05-18 22:20 +0200
        Re: 4.5-rc0 regression: GPRS breaks after very short while Sebastian Reichel <sre@kernel.org> - 2016-05-20 06:20 +0200

#1402771 — 4.5-rc0 regression: GPRS breaks after very short while

FromPavel Machek <pavel@ucw.cz>
Date2016-05-18 09:50 +0200
Subject4.5-rc0 regression: GPRS breaks after very short while
Message-ID<rA4oW-7vr-23@gated-at.bofh.it>
Hi!

I was afraid another GSM chip desoldered itself in N900, but no, it
seems to be software this time.

In 4.4, GPRS is rock solid, can survive overnight ping.

In 4.5-rc0 and v4.6, modem fails when I use gprs for like a
minute. Phone is not usable.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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#1403025

FromSebastian Reichel <sre@kernel.org>
Date2016-05-18 16:20 +0200
Message-ID<rAaun-3d5-37@gated-at.bofh.it>
In reply to#1402771

[Multipart message — attachments visible in raw view] — view raw

Hi Pavel,

On Wed, May 18, 2016 at 09:49:24AM +0200, Pavel Machek wrote:
> I was afraid another GSM chip desoldered itself in N900, but no, it
> seems to be software this time.
> 
> In 4.4, GPRS is rock solid, can survive overnight ping.
> 
> In 4.5-rc0 and v4.6, modem fails when I use gprs for like a
> minute. Phone is not usable.

I only send three modem related changes for v4.5:

https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=525e1abc6b5a7d8bd9006de1da6e99722305ea2b
HSI: omap_ssi: fix handling ida_simple_get result

https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=6bf6ded3008a407ccab5ad72eb59ab71b97cc290
HSI: omap_ssi_port: fix handling of_get_named_gpio result

https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=403c5c0650816375527a6feecfb255d9b494dda3
HSI: Remove struct hsi_client private fields from kernel-doc

The last one only changes a comment, so not relevant, the other
two fix error handling during initialization and are most likely
also not the problem. Can you try to bisect the problem?

-- Sebastian

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#1403262

FromPavel Machek <pavel@ucw.cz>
Date2016-05-18 22:20 +0200
Message-ID<rAg6K-6L0-1@gated-at.bofh.it>
In reply to#1403025
Hi!

> On Wed, May 18, 2016 at 09:49:24AM +0200, Pavel Machek wrote:
> > I was afraid another GSM chip desoldered itself in N900, but no, it
> > seems to be software this time.
> > 
> > In 4.4, GPRS is rock solid, can survive overnight ping.
> > 
> > In 4.5-rc0 and v4.6, modem fails when I use gprs for like a
> > minute. Phone is not usable.
> 
> I only send three modem related changes for v4.5:
> 
> https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=525e1abc6b5a7d8bd9006de1da6e99722305ea2b
> HSI: omap_ssi: fix handling ida_simple_get result
> 
> https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=6bf6ded3008a407ccab5ad72eb59ab71b97cc290
> HSI: omap_ssi_port: fix handling of_get_named_gpio result
> 
> https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/commit/?h=hsi-for-4.5&id=403c5c0650816375527a6feecfb255d9b494dda3
> HSI: Remove struct hsi_client private fields from kernel-doc
> 
> The last one only changes a comment, so not relevant, the other
> two fix error handling during initialization and are most likely
> also not the problem. Can you try to bisect the problem?

It will not be fun, but I guess it is doable. But before I start it
would be good to know -- does it work for you?

Thanks and best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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#1404120

FromSebastian Reichel <sre@kernel.org>
Date2016-05-20 06:20 +0200
Message-ID<rAK4N-KC-1@gated-at.bofh.it>
In reply to#1403262

[Multipart message — attachments visible in raw view] — view raw

Hi,

On Wed, May 18, 2016 at 10:12:51PM +0200, Pavel Machek wrote:
> > The last one only changes a comment, so not relevant, the other
> > two fix error handling during initialization and are most likely
> > also not the problem. Can you try to bisect the problem?
> 
> It will not be fun, but I guess it is doable. But before I start it
> would be good to know -- does it work for you?

I currently don't have a second SIM card with network access for my
dev phone, so I usually only test without gprs connection. As a
result I don't really know if longer data connection would work.

Also I'm quite busy until next weekend with other stuff. If you did
not find anything until then, I will do some testing/debugging.

-- Sebastian

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