ACPI: Introduce has_acpi_companion()
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 16 Mar 2015 22:49:08 +0000 (23:49 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 16 Mar 2015 22:49:08 +0000 (23:49 +0100)
commitca5b74d2675a44f54aacb919c1cf022463e2f738
tree08081e436bfed580e7f5a059faa1c77da3dbd58e
parentce793486e23e0162a732c605189c8028e0910e86
ACPI: Introduce has_acpi_companion()

Now that the ACPI companions of devices are represented by pointers
to struct fwnode_handle, it is not quite efficient to check whether
or not an ACPI companion of a device is present by evaluating the
ACPI_COMPANION() macro.

For this reason, introduce a special static inline routine for that,
has_acpi_companion(), and update the code to use it where applicable.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/glue.c
drivers/i2c/busses/i2c-designware-platdrv.c
drivers/iommu/intel-iommu.c
include/linux/acpi.h