Re: [PATCH] Input: psmouse - add resync_on_resume dmi check

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Jonathan Denose <jdenose@chromium.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	jefferymiller@google.com, Jonathan Denose <jdenose@google.com>,
	Raul Rangel <rrangel@chromium.org>,
	linux-input@vger.kernel.org
Subject: Re: [PATCH] Input: psmouse - add resync_on_resume dmi check
Date: Thu, 29 Feb 2024 10:23:39 -0800	[thread overview]
Message-ID: <ZeDLq9gPs5InBmdK@google.com> (raw)
In-Reply-To: <CALNJtpWNbSZdpxky9hTiSRsaGgLDUnM66QGEy213d3Lhra0hsw@mail.gmail.com>

On Mon, Feb 12, 2024 at 02:57:08PM -0600, Jonathan Denose wrote:
...
> [   50.241235] ideapad_acpi VPC2004:00: PM: calling acpi_subsys_resume+0x0/0x5d @ 4492, parent: PNP0C09:00
> [   50.242055] snd_hda_intel 0000:00:0e.0: PM: pci_pm_resume+0x0/0xed returned 0 after 13511 usecs
> [   50.242120] snd_hda_codec_realtek hdaudioC0D0: PM: calling hda_codec_pm_resume+0x0/0x19 [snd_hda_codec] @ 4518, parent: 0000:00:0e.0
> [   50.247406] i8042: [49434] a8 -> i8042 (command)
> [   50.247468] ideapad_acpi VPC2004:00: PM: acpi_subsys_resume+0x0/0x5d returned 0 after 6220 usecs
...
> [   50.247883] i8042 kbd 00:01: PM: calling pnp_bus_resume+0x0/0x9d @ 4492, parent: pnp0
> [   50.247894] i8042 kbd 00:01: PM: pnp_bus_resume+0x0/0x9d returned 0 after 0 usecs
> [   50.247906] i8042 aux 00:02: PM: calling pnp_bus_resume+0x0/0x9d @ 4492, parent: pnp0
> [   50.247916] i8042 aux 00:02: PM: pnp_bus_resume+0x0/0x9d returned 0 after 0 usecs
...
> [   50.248301] i8042 i8042: PM: calling platform_pm_resume+0x0/0x41 @ 4492, parent: platform
> [   50.248377] i8042: [49434] 55 <- i8042 (flush, kbd)
> [   50.248407] i8042: [49435] aa -> i8042 (command)
> [   50.248601] i8042: [49435] 00 <- i8042 (return)
> [   50.248604] i8042: [49435] i8042 controller selftest: 0x0 != 0x55

So here I see the ideapad-laptop driver trying to access i8042 before it
even starts resuming. I wonder, does it help if you disable
(temporarily) the ideapad driver?

Thanks.

-- 
Dmitry