target/linux/generic/backport-5.15/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch

   1 From ff24fed10ba414d19579e26e60b126fad2f2bb07 Mon Sep 17 00:00:00 2001
   2 From: Michael Walle <michael@walle.cc>
   3 Date: Mon, 6 Feb 2023 13:43:44 +0000
   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 Link: https://lore.kernel.org/r/20230206134356.839737-11-srinivas.kandagatla@linaro.org
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18 ---
  19  drivers/of/property.c | 4 ++--
  20  1 file changed, 2 insertions(+), 2 deletions(-)
  21
  22 --- a/drivers/of/property.c
  23 +++ b/drivers/of/property.c
  24 @@ -1173,8 +1173,8 @@ static struct device_node *parse_prop_ce
  25         if (strcmp(prop_name, list_name))
  26                 return NULL;
  27
  28 -       if (of_parse_phandle_with_args(np, list_name, cells_name, index,
  29 -                                      &sup_args))
  30 +       if (__of_parse_phandle_with_args(np, list_name, cells_name, 0, index,
  31 +                                        &sup_args))
  32                 return NULL;
  33
  34         return sup_args.np;