linux-kernel - [PATCH v4 03/20] of: property: make #.*-cells optional for simple props

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Message-Id: <20221123180151.2160033-4-michael@walle.cc>
Date:   Wed, 23 Nov 2022 19:01:34 +0100
From:   Michael Walle <michael@...le.cc>
To:     Jonathan Corbet <corbet@....net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        Michael Walle <michael@...le.cc>
Subject: [PATCH v4 03/20] of: property: make #.*-cells optional for simple props

Sometimes, future bindings for phandles will get additional arguments.
Thus the target node of the phandle will need a new #.*-cells property.
To be backwards compatible, this needs to be optional.

Prepare the DEFINE_SIMPLE_PROPS() to handle the cells name as optional.

Signed-off-by: Michael Walle <michael@...le.cc>
Tested-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
changes since v3:
 - new patch

 drivers/of/property.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 967f79b59016..9773bfeaed9f 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1254,8 +1254,8 @@ static struct device_node *parse_suffix_prop_cells(struct device_node *np,
 	if (strcmp_suffix(prop_name, suffix))
 		return NULL;
 
-	if (of_parse_phandle_with_args(np, prop_name, cells_name, index,
-				       &sup_args))
+	if (__of_parse_phandle_with_args(np, prop_name, cells_name, 0, index,
+					 &sup_args))
 		return NULL;
 
 	return sup_args.np;
-- 
2.30.2