Re: [PATCH v2] ACPI: surface3_power: MSHW0011 rev-eng implementation

From: Hans de Goede
Date: Fri Jun 30 2017 - 13:42:32 EST


Hi,

On 30-06-17 19:40, Andy Shevchenko wrote:
On Fri, Jun 30, 2017 at 8:37 PM, Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
On 30-06-17 18:37, Andy Shevchenko wrote:
On Fri, Jun 30, 2017 at 6:57 PM, Benjamin Tissoires

ACPI i2c drivers still need an empty i2c_device_id table I've
fixing this on my TODO but it has been buried in other stuff.

Benjamin if (not saying you should, but if) you want to take a look at
this, fixing the need for the empty table for ACPI devices should be
easy. The problem is these lines in drivers/i2c/i2c-core.c:
i2c_device_probe():

/*
* An I2C ID table is not mandatory, if and only if, a suitable
Device
* Tree match table entry is supplied for the probing device.
*/
if (!driver->id_table &&
!i2c_of_match_device(dev->driver->of_match_table, client))
return -ENODEV;

Which needs to be extended to also check for an ACPI match AFAIK
you can NOT just replace this with i2c_device_match because that would
break manually binding a driver through sysfs.

I have a stashed change for that, just have no time to look closer.

Care to share that? Between me and Benjamin one of us can hopefully
find the time to test / finish it (should be trivial really).

Regards,

Hans