| Message ID | 20231106073141.1250344-1-sakari.ailus@linux.intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [RESEND,v4,1/1] device property: Add fwnode_name_eq() | expand |
On Mon, Nov 06, 2023 at 09:31:41AM +0200, Sakari Ailus wrote: > Add fwnode_name_eq() to implement the functionality of of_node_name_eq() > on fwnode property API. The same convention of ending the comparison at > '@' (besides NUL) is applied on also both ACPI and swnode. The function > is intended for comparing unit address-less node names on DT and firmware > or swnodes compliant with DT bindings. > > Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Acked-by: Rafael J. Wysocki <rafael@kernel.org> > --- > Hi Greg, > > Could we merge this via the media tree? For 6.8-rc1? Sure, feel free to: Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On Mon, Nov 06, 2023 at 09:45:45AM +0100, Greg Kroah-Hartman wrote: > On Mon, Nov 06, 2023 at 09:31:41AM +0200, Sakari Ailus wrote: > > Add fwnode_name_eq() to implement the functionality of of_node_name_eq() > > on fwnode property API. The same convention of ending the comparison at > > '@' (besides NUL) is applied on also both ACPI and swnode. The function > > is intended for comparing unit address-less node names on DT and firmware > > or swnodes compliant with DT bindings. > > > > Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> > > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > Acked-by: Rafael J. Wysocki <rafael@kernel.org> > > --- > > Hi Greg, > > > > Could we merge this via the media tree? > > For 6.8-rc1? Sure, feel free to: > > Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Yes, 6.8-rc1 is the target. Thanks!
diff --git a/drivers/base/property.c b/drivers/base/property.c index 8667b13639d2..f20379c9a5c9 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -595,6 +595,34 @@ const char *fwnode_get_name_prefix(const struct fwnode_handle *fwnode) return fwnode_call_ptr_op(fwnode, get_name_prefix); } +/** + * fwnode_name_eq - Return true if node name is equal + * @fwnode: The firmware node + * @name: The name to which to compare the node name + * + * Compare the name provided as an argument to the name of the node, stopping + * the comparison at either NUL or '@' character, whichever comes first. This + * function is generally used for comparing node names while ignoring the + * possible unit address of the node. + * + * Return: true if the node name matches with the name provided in the @name + * argument, false otherwise. + */ +bool fwnode_name_eq(const struct fwnode_handle *fwnode, const char *name) +{ + const char *node_name; + ptrdiff_t len; + + node_name = fwnode_get_name(fwnode); + if (!node_name) + return false; + + len = strchrnul(node_name, '@') - node_name; + + return str_has_prefix(node_name, name) == len; +} +EXPORT_SYMBOL_GPL(fwnode_name_eq); + /** * fwnode_get_parent - Return parent firwmare node * @fwnode: Firmware whose parent is retrieved diff --git a/include/linux/property.h b/include/linux/property.h index 083a1f41364b..096ade186601 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -108,6 +108,7 @@ struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode, const char *fwnode_get_name(const struct fwnode_handle *fwnode); const char *fwnode_get_name_prefix(const struct fwnode_handle *fwnode); +bool fwnode_name_eq(const struct fwnode_handle *fwnode, const char *name); struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode); struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode);