Date:   Fri, 1 Mar 2019 21:10:17 +0100 (CET)
From:   Stefan Wahren <stefan.wahren@i2se.com>
To:     Arend van Spriel <arend.vanspriel@broadcom.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>
Message-ID: <1125416917.128310.1551471017839@email.ionos.de>
Subject: brcmfmac: bogus error messages during module unload
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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?

Thanks
Stefan