Le Fri, 18 Mar 2022 18:29:39 +0200, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> a écrit : > On Fri, Mar 18, 2022 at 05:00:48PM +0100, Clément Léger wrote: > > Add fwnode_find_i2c_adapter_by_node() which allows to retrieve a i2c > > adapter using a fwnode. Since dev_fwnode() uses the fwnode provided by > > the of_node member of the device, this will also work for devices were > > the of_node has been set and not the fwnode field. > > > + /* For ACPI device node, we do not want to match the parent */ > > Why? > Neither commit message nor this comment does not answer to this question. > Yes you are right. This is done to keep the existing behavior that is applied by i2c_acpi_find_adapter_by_handle() which only checks the device node and not the parent one. Using the same behavior than for DT would add some unwanted behavior in I2C device lookup for ACPI. -- Clément Léger, Embedded Linux and Kernel engineer at Bootlin https://bootlin.com
