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* brcmfmac regression in 4.19 ?
@ 2019-01-11 15:18 Hans de Goede
       [not found] ` <CAF7Mx6qrbZr-hVFKPH3kMzTczBWTZmPqZbviKmMCb_uo6O+s+w@mail.gmail.com>
  0 siblings, 1 reply; 2+ messages in thread
From: Hans de Goede @ 2019-01-11 15:18 UTC (permalink / raw)
  To: Arend van Spriel,
	Franky Lin <franky.lin@broadcom.com>Franky Lin,
	Hante Meuleman
  Cc: Kalle Valo, linux-wireless, brcm80211-dev-list.pdl

Hi,

We (Fedora) have been getting bugreports that brcmfmac wifi drops out and needs a rmmod + modprobe
to restore functionality starting with kernel 4.19:

https://bugzilla.redhat.com/show_bug.cgi?id=1658178

Disabling powersaving reportedly helps, but leads to an oops (which might be a hint?) :

https://bugzilla.redhat.com/show_bug.cgi?id=1661768

Regards

Hans

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: brcmfmac regression in 4.19 ?
       [not found] ` <CAF7Mx6qrbZr-hVFKPH3kMzTczBWTZmPqZbviKmMCb_uo6O+s+w@mail.gmail.com>
@ 2019-01-12 13:29   ` Arend Van Spriel
  0 siblings, 0 replies; 2+ messages in thread
From: Arend Van Spriel @ 2019-01-12 13:29 UTC (permalink / raw)
  To: Hans de Goede; +Cc: Kalle Valo, linux-wireless

On 1/11/2019 4:34 PM, Arend Van Spriel wrote:
> - list (HTML filtering)
> 
> Op vr 11 jan. 2019 16:18 schreef Hans de Goede <hdegoede@redhat.com 
> <mailto:hdegoede@redhat.com>:
> 
>     Hi,
> 
>     We (Fedora) have been getting bugreports that brcmfmac wifi drops
>     out and needs a rmmod + modprobe
>     to restore functionality starting with kernel 4.19:
> 
>     https://bugzilla.redhat.com/show_bug.cgi?id=1658178
> 
> 
> Will look into this. Maybe it is similar to what Russell King reported.

Probably not. The bug report above is with PCIe device. The dmesg 
attached to the bug report shows user is doing system suspend/resume 
over and over until the following occurs:

[28151.874963] brcmfmac: brcmf_psm_watchdog_notify: PSM's watchdog has 
fired!
[29354.351337] brcmfmac: brcmf_psm_watchdog_notify: PSM's watchdog has 
fired!

PSM is the hardware block which processes the 802.11 packets received 
from firmware and passes them to the phy layer. When this watchdog barks 
the firmware will end up in a trap. We do collect a devcoredump upon the 
watchdog, but unfortunately that will not tell much about the failure in 
the hardware block. On monday I will try to come up with a patch to 
obtain more information from the device regarding this watchdog.

Regards,
Arend

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2019-01-11 15:18 brcmfmac regression in 4.19 ? Hans de Goede
     [not found] ` <CAF7Mx6qrbZr-hVFKPH3kMzTczBWTZmPqZbviKmMCb_uo6O+s+w@mail.gmail.com>
2019-01-12 13:29   ` Arend Van Spriel

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