From: Greg KH <gregkh@linuxfoundation.org>
To: "Limonciello, Mario" <Mario.Limonciello@amd.com>
Cc: "stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: AMD SFH sensor discovery
Date: Thu, 26 May 2022 13:46:47 +0200 [thread overview]
Message-ID: <Yo9op+9hgd+JfqDG@kroah.com> (raw)
In-Reply-To: <MN0PR12MB6101243B86EAF100FE859714E2D69@MN0PR12MB6101.namprd12.prod.outlook.com>
On Wed, May 25, 2022 at 07:23:59PM +0000, Limonciello, Mario wrote:
> [Public]
>
> Hi,
>
> The firmware on some OEM laptops with AMD SOCs advertise that they have sensors connected to AMD SFH but they really don't
> physically have them. In 5.19 a commit has gone in that discovers this case and prevents the driver from advertising this sensor
> to userspace. This might not seem like a big deal to have sensors advertised that aren't really there, but AMD has observed
> that specifically on orientation sensors the random garbage data associated can cause userspace to interpret a screen rotation
> during resume from suspend.
>
> As GNOME has a daemon running that interprets these events I've seen first hand that it can cause the display go upside down
> without a lot of recourse other than command line tools or rebooting.
>
> Can you please backport this commit to 5.15.y+ and later to fix this:
> commit b5d7f43e97dabfa04a4be5ff027ce7da119332be ("HID: amd_sfh: Add support for sensor discovery")
How queued up, thanks.
greg k-h
prev parent reply other threads:[~2022-05-26 11:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-25 19:23 AMD SFH sensor discovery Limonciello, Mario
2022-05-26 11:46 ` Greg KH [this message]
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