ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 1 Apr 2013 00:25:03 +0000 (00:25 +0000)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 2 Apr 2013 13:30:41 +0000 (15:30 +0200)
commitb34bb1ee71158d5b0f9028fb98afd026202bcfe9
treec3887142e31c3621bd591a19e456e02237425647
parent29896178cff0cd6e4ee78edc26158cc197a6b504
ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices()

The ACPI handle of struct i2c_adapter's dev member should not be
set, because this causes that struct i2c_adapter to be associated
with the ACPI device node corresponding to its parent as the
second "physical_device", which is incorrect (this happens during
the registration of struct i2c_adapter).  Consequently,
acpi_i2c_register_devices() should use the ACPI handle of the
parent of the struct i2c_adapter it is called for rather than the
struct i2c_adapter's ACPI handle (which should be NULL).

Make that happen and modify the i2c-designware-platdrv driver,
which currently is the only driver for ACPI-enumerated I2C
controller chips, not to set the ACPI handle for the
struct i2c_adapter it creates.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
drivers/acpi/acpi_i2c.c
drivers/i2c/busses/i2c-designware-platdrv.c