target/linux/generic/backport-5.10/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch

   1 From 4f4145c9fee8c7a445dbbbadceccce5391e6b287 Mon Sep 17 00:00:00 2001
   2 From: Michael Walle <michael@walle.cc>
   3 Date: Tue, 6 Dec 2022 21:07:22 +0100
   4 Subject: [PATCH] of: property: make #.*-cells optional for simple props
   5
   6 Sometimes, future bindings for phandles will get additional arguments.
   7 Thus the target node of the phandle will need a new #.*-cells property.
   8 To be backwards compatible, this needs to be optional.
   9
  10 Prepare the DEFINE_SIMPLE_PROPS() to handle the cells name as optional.
  11
  12 Signed-off-by: Michael Walle <michael@walle.cc>
  13 Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
  14 Reviewed-by: Rob Herring <robh@kernel.org>
  15 Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
  16 ---
  17  drivers/of/property.c | 4 ++--
  18  1 file changed, 2 insertions(+), 2 deletions(-)
  19
  20 --- a/drivers/of/property.c
  21 +++ b/drivers/of/property.c
  22 @@ -1267,8 +1267,8 @@ static struct device_node *parse_suffix_
  23         if (strcmp_suffix(prop_name, suffix))
  24                 return NULL;
  25
  26 -       if (of_parse_phandle_with_args(np, prop_name, cells_name, index,
  27 -                                      &sup_args))
  28 +       if (__of_parse_phandle_with_args(np, prop_name, cells_name, 0, index,
  29 +                                        &sup_args))
  30                 return NULL;
  31
  32         return sup_args.np;