On Wednesday, June 10, 2015 04:17:44 PM Arend van Spriel wrote:
> For backporting a driver to 3.11 kernel I would like to know how to get
> same functionality as ACPI_COMPANION(). I did it like below, but would
> like to have some confirmation on it.
Yes, that should work in general.
> --8<------------------------------------------------------------------
> static inline
> struct acpi_device *_acpi_get_companion(struct device *dev)
> {
> struct acpi_device *adev;
> int ret;
>
> ret = acpi_bus_get_device(ACPI_HANDLE(dev), &adev);
> if (ret < 0)
> adev = NULL;
>
> return adev;
> }
> #define ACPI_COMPANION(dev) _acpi_get_companion(dev)
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--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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