Re: [PATCH v2] ACPI: bus.c: Let acpi_device_get_match_data() return DT compatibility data

From: Nikolaus Voss
Date: Tue Jul 24 2018 - 09:30:36 EST


On Wed, 4 Jul 2018, Andy Shevchenko wrote:
On Tue, Jul 3, 2018 at 9:09 AM, Nikolaus Voss <nv@xxxxxxx> wrote:
When using ACPI with ACPI_DT_NAMESPACE_HID/ PRP0001 HID and referring to
of_device_id table "compatible" strings in DSD, a pointer to the
corresponding DT table entry should be returned instead of a null
pointer. An acpi_device_id match still takes precedence.


Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>

with a caveat that this is only an improvement for a _temporary_
PRP0001 users like I2C or SPI slave devices.
Please, don't consider this change as a valid point to (ab)use PRP0001
in a cases where devices are not "hotpluggable".

Will add the caveat and resend. Andy, thanks for reviewing!

Niko