Re: [PATCH v11 1/9] mfd: intel-lpss: add resource conflict quirk for Dell Latitude 5285

From: Sakari Ailus

Date: Thu Oct 01 2026 - 03:25:07 EST


Hi Andy,

On Thu, Oct 01, 2026 at 10:05:05AM +0300, Andy Shevchenko wrote:
> On Wed, Sep 30, 2026 at 02:43:13PM -0700, Thierry Chatard wrote:
> > The Dell Latitude 5285 2-in-1 has a BIOS bug where the ACPI GEXP device
> > and the I2C4 controller (INT3446) both claim the same MMIO region via the
> > shared SB04 variable. This causes intel_lpss_acpi to fail binding to I2C4
> > with -EBUSY, preventing the front camera (OV5670) sensor from being
> > registered.
> >
> > Match the affected machine by DMI and the affected device by ACPI ID,
> > carrying QUIRK_IGNORE_RESOURCE_CONFLICTS in the ACPI match data and
> > applying it to the per-device info in probe. This follows the quirk
> > organisation used by the PCI counterpart.
>
> > Assisted-by: Claude Code:claude-opus-4-8
>
> Assisted-by: LLM

While coding-assistants.rst does indeed suggest to just use "LLM", I think
more specific information is worth having, too. Specifying this seems
commonplace elsewhere. I have to admit I haven't followed the related
discussions.

--
Regards,

Sakari Ailus