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From: Fabio Estevam <festevam@gmail.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>, linux-input@vger.kernel.org
Subject: Re: Delaying i8042 probe?
Date: Fri, 17 Sep 2021 08:36:19 -0300	[thread overview]
Message-ID: <CAOMZO5DHHb3XJS2XDY=b1ALt3nQR0tOMWvv_GQQYTnEYN6Em0w@mail.gmail.com> (raw)
In-Reply-To: <s5hilz0c23i.wl-tiwai@suse.de>

Hi Takashi,

On Thu, Sep 16, 2021 at 6:16 AM Takashi Iwai <tiwai@suse.de> wrote:

> The patch was confirmed to work.

That's good news.

>   https://bugzilla.suse.com/show_bug.cgi?id=1190256#c19
>
> | That one worked despite the CTR error:
> |
> | [    0.000000] Linux version 5.14.2-3.g9458b22-default (geeko@buildhost) (gcc (SUSE Linux) 11.2.1 20210816 [revision 056e324ce46a7924b5cf10f61010cf9dd2ca10e9], GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.36.1.20210326-4) #1 SMP Sun Sep 12 20:15:58 UTC 2021 (9458b22)
> | [    0.484315] i8042: PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
> | [    0.484318] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
> | [    1.005361] i8042: Can't read CTR while initializing i8042
> | [    1.477053] serio: i8042 KBD port at 0x60,0x64 irq 1
> | [    1.503700] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2
> |
> | Seems it takes more than a secod to initialize, ugh
>
> I'm not sure what's done during this 0.5 second period after CTR read
> failure.  At least only shuffling the driver init order for built-in
> drivers didn't suffice.

This extra 0.5 seconds is the time it takes to re-probe the driver at
a later stage after deferral.

I am not familiar with this driver and its BIOS dependencies, so let's
see what Dmitry suggests as a proper fix.

Thanks

      reply	other threads:[~2021-09-17 11:36 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10 10:49 Delaying i8042 probe? Takashi Iwai
2021-09-10 11:07 ` Fabio Estevam
2021-09-10 12:07   ` Takashi Iwai
2021-09-11  1:36     ` Fabio Estevam
2021-09-11  7:32       ` Takashi Iwai
2021-09-11 18:43         ` Fabio Estevam
2021-09-11 18:50           ` Fabio Estevam
2021-09-11 22:54             ` Dmitry Torokhov
2021-09-16  9:22               ` Takashi Iwai
2021-10-05 15:43                 ` Takashi Iwai
2021-10-19  5:41                   ` Takashi Iwai
2021-09-16  9:16             ` Takashi Iwai
2021-09-17 11:36               ` Fabio Estevam [this message]

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