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

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Message-ID: <CAHCN7x+0KEQGztgn0+75kNNU87__zbatzCtuSX0_EMLxjTnvRg@mail.gmail.com>
Date:   Wed, 6 Nov 2019 06:46:39 -0600
From:   Adam Ford <aford173@...il.com>
To:     "H. Nikolaus Schaller" <hns@...delico.com>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        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

On Wed, Nov 6, 2019 at 4:38 AM H. Nikolaus Schaller <hns@...delico.com> wrote:
>
>
> > 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.)

Thank you for the pointer on that.  It addressed my issue.

adam
>
> I can confirm that I have it disabled in our config which seems to work.
>
> BR,
> Nikolaus
>