linux-kernel - [PATCH] of/platform: fix compilation warning of of_link

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Date:   Thu,  8 Aug 2019 16:18:18 +0200
From:   Anders Roxell <anders.roxell@...aro.org>
To:     robh+dt@...nel.org, frowand.list@...il.com
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH] of/platform: fix compilation warning of of_link_property()

GCC warns that a negative integer can be returned but the
of_link_property() function should return a boolean.

../drivers/of/platform.c: In function ‘of_link_property’:
../drivers/of/platform.c:650:18: warning: ?: using integer constants in boolean context [-Wint-in-bool-context]
  return done ? 0 : -ENODEV;

Rework so function of_link_property() return an integer instead of a boolean.

Fixes: 690ff7881b26 ("of/platform: Add functional dependency link from DT bindings")
Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 drivers/of/platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 21838226d68a..86fb8ab8c012 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -625,7 +625,7 @@ static const struct supplier_bindings bindings[] = {
 	{ },
 };
 
-static bool of_link_property(struct device *dev, struct device_node *con_np,
+static int of_link_property(struct device *dev, struct device_node *con_np,
 			     const char *prop)
 {
 	struct device_node *phandle;
-- 
2.20.1