linux-kernel - Re: wlcore: Fix regression in wlcore_set

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Message-ID: <CANfgCY04juY=xaJ88UN9NE+T9Xne+AEczitjj7vrLxtG_eb+AA@mail.gmail.com>
Date:	Wed, 24 Feb 2016 16:40:50 +1100
From:	Ross Green <rgkernel@...il.com>
To:	Kalle Valo <kvalo@...eaurora.org>
Cc:	Emil Goode <emil.fsw@...de.io>, Shahar Patury <shaharp@...com>,
	Guy Mishol <guym@...com>,
	Igor Grinberg <grinberg@...pulab.co.il>,
	Uri Mashiach <uri.mashiach@...pulab.co.il>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: wlcore: Fix regression in wlcore_set_partition()

On Wed, Feb 17, 2016 at 4:34 PM, Ross Green <rgkernel@...il.com> wrote:
> Appreciate your efforts!
>
> Just trying to make sure it does not get lost.
> Introduced in rc1, not fixed by ... rc4.
>
> Anyway, I will continue to test, lots of other things still to chase
> even in rc4!
>
> Regards,
>
> Ross Green
>
> On Wed, Feb 17, 2016 at 2:24 AM, Kalle Valo <kvalo@...eaurora.org> wrote:
>> Ross Green <rgkernel@...il.com> writes:
>>
>>> On Fri, Feb 12, 2016 at 8:45 PM, Kalle Valo <kvalo@...eaurora.org> wrote:
>>>>
>>>>> The commit 3719c17e1816 ("wlcore/wl18xx: fw logger over sdio") introduced a
>>>>> regression causing the wlcore to time out and go into recovery. Reverting the
>>>>> changes regarding write of the last partition size brings the module back to
>>>>> it's functional state.
>>>>>
>>>>> Fixes: 3719c17e1816 ("wlcore/wl18xx: fw logger over sdio")
>>>>> Reported-by: Ross Green <rgkernel@...il.com>
>>>>> Signed-off-by: Emil Goode <emil.fsw@...de.io>
>>>>> [kvalo@...eaurora.org: improved commit log]
>>>>
>>>> Thanks, applied to wireless-drivers.git.
>>>>
>>>> Kalle Valo
>>>
>>> I just tested linux-4.5-rc4 it appears the above fix missed the release for rc4!
>>> So the behaviour of firmware reset being called after the access of
>>> the last partition timesout.
>>>
>>> Again tested patch with the new release - 4.5-rc4 and found everything
>>> to work as expected again.
>>>
>>> So Hopefully for rc5 - Please!
>>
>> It takes some time to get patches into Linus' tree. And being in a
>> conference and then getting sick is not really helping. I'm not sure if
>> this patch makes to rc5 on time, but I'll try.
>>
>> --
>> Kalle Valo

G'day all,

I have tested Emil's patch with each 4.5-rc release.

Seems to work fine with rc2, rc3, rc4.
I tried it with rc5 and get the following output from dmesg see attachment.

So it looks like there is a reset that it recovers from and then proceeds OK.

I see the patch has been queued by David Miller so it might make it into rc6.
That will be great. It still does not look quite as clean as it should
be however, given the noise in the dmesg output from rc5

Regards,


Ross Green

Download attachment "dmesg-4.5-rc5-wlcore" of type "application/octet-stream" (26262 bytes)