linux-kernel - [PATCH] of: constify drv arg of of_driver_match

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Date:	Wed,  1 Jul 2015 09:10:43 +0200
From:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:	linux-kernel@...r.kernel.org
Cc:	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH] of: constify drv arg of of_driver_match_device stub

With this change the stub has the same signature as the actual function,
preventing this compiler warning when building without CONFIG_OF:

   drivers/base/property.c: In function 'fwnode_driver_match_device':
>> drivers/base/property.c:608:38: warning: passing argument 2 of 'of_driver_match_device' discards 'const' qualifier from pointer target type
      return of_driver_match_device(dev, drv);
                                         ^
   In file included from drivers/base/property.c:18:0:
   include/linux/of_device.h:61:19: note: expected 'struct device_driver *' but argument is of type 'const struct device_driver *'
    static inline int of_driver_match_device(struct device *dev,
                      ^

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
---
 include/linux/of_device.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index 4c50854..cc7dd687 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -59,7 +59,7 @@ void of_dma_configure(struct device *dev, struct device_node *np);
 #else /* CONFIG_OF */
 
 static inline int of_driver_match_device(struct device *dev,
-					 struct device_driver *drv)
+					 const struct device_driver *drv)
 {
 	return 0;
 }
-- 
2.4.1

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