netdev - Re: Long Delay on startup of wl18xx Wireless chip

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87sgn1z467.fsf@codeaurora.org>
Date:   Wed, 06 Nov 2019 12:32:00 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Adam Ford <aford173@...il.com>
Cc:     Linux-OMAP <linux-omap@...r.kernel.org>,
        "David S . Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: Long Delay on startup of wl18xx Wireless chip

Adam Ford <aford173@...il.com> writes:

> On Tue, Nov 5, 2019 at 12:25 PM Adam Ford <aford173@...il.com> wrote:
>>
>> I am seeing a really long delay at startup of the wl18xx using the 5.4 kernel.
>>
>
> Sorry I had to resend.  I forgot to do plaintext.  Google switched
> settings on me and neglected to inform me.
>
>
>> [ 7.895551] wl18xx_driver wl18xx.2.auto: Direct firmware load for
>> ti-connectivity/wl18xx-conf.bin failed with error -2
>> [ 7.906416] wl18xx_driver wl18xx.2.auto: Falling back to sysfs
>> fallback for: ti-connectivity/wl18xx-conf.bin
>>
>> At this point in the sequence, I can login to Linux, but the WL18xx is unavailable.
>>
>> [   35.032382] vwl1837: disabling
>> [ 69.594874] wlcore: ERROR could not get configuration binary
>> ti-connectivity/wl18xx-conf.bin: -11
>> [   69.604013] wlcore: WARNING falling back to default config
>> [   70.174821] wlcore: wl18xx HW: 183x or 180x, PG 2.2 (ROM 0x11)
>> [ 70.189003] wlcore: WARNING Detected unconfigured mac address in
>> nvs, derive from fuse instead.
>> [   70.197851] wlcore: WARNING This default nvs file can be removed from the file system
>> [   70.218816] wlcore: loaded
>>
>> It is now at this point when the wl18xx is available.
>>
>> I have the wl18xx and wlcore setup as a module so it should load
>> after the filesystem is mounted. I am not using a wl18xx-conf.bin,
>> but I never needed to use this before.
>>
>> It seems to me unreasonable to wait 60+ seconds after everything is
>> mounted for the wireless chip to become available. Before I attempt
>> to bisect this, I was hoping someone might have seen this. I am also
>> trying to avoid duplicating someone else's efforts.
>>
>> I know the 4.19 doesn't behave like this.

Try disabling CONFIG_FW_LOADER_USER_HELPER, that usually causes a 60
second delay if the user space is not setup to handle the request. (Or
something like that.)

-- 
Kalle Valo