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

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Date:   Wed, 6 Nov 2019 11:38:24 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Kalle Valo <kvalo@...eaurora.org>, 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


> Am 06.11.2019 um 11:32 schrieb Kalle Valo <kvalo@...eaurora.org>:
> 
> 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.)

I can confirm that I have it disabled in our config which seems to work.

BR,
Nikolaus