From:   Arend Van Spriel <arend.vanspriel@broadcom.com>
To:     Stefan Wahren <stefan.wahren@i2se.com>,
        "Chi-Hsien Lin" <chi-hsien.lin@cypress.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Wright Feng <wright.feng@cypress.com>
CC:     "linux-wireless" <linux-wireless@vger.kernel.org>
Date:   Sat, 02 Mar 2019 08:05:15 +0100
Message-ID: <1693d389ff8.278a.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com>
In-Reply-To: <1125416917.128310.1551471017839@email.ionos.de>
References: <1125416917.128310.1551471017839@email.ionos.de>
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Subject: Re: brcmfmac: bogus error messages during module unload
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Op 1 maart 2019 21:10:18 schreef Stefan Wahren <stefan.wahren@i2se.com>:

> Hi,
>
> this is some kind of older issue with brcmfmac. Everytime i unload the 
> kernel module (e.g. v5.0-rc8 or next-20190301) on a Raspberry Pi 3 
> (multi_v7_defconfig / arm64_defconfig) after the driver has successful 
> probed, i'm getting such bogus error messages in the kernel log:
>
> [  870.477114] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg 
> failed w/status -5
> [  870.477122] brcmfmac: brcmf_cfg80211_get_tx_power: error (-5)
> [  871.057074] brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing 
> to do.
> [  871.057153] brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing 
> to do.
> [  871.057870] brcmfmac: brcmf_fil_cmd_data: bus is down. we have nothing 
> to do.
> [  871.057878] brcmfmac: brcmf_cfg80211_get_channel: chanspec failed (-5)
>
> Is there a chance to remove or at least reduce them?

These are triggered by user-space. Upon remove we can not communicate with 
the device, but have not yet removed the network interfaces. So when 
user-space does a request we fail. I will have a look at it.

Regards,
Arend

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