driver core: Let dev_of_node() accept a NULL dev
We'd like to chain this in places where the 'dev' argument might be
NULL. Let this function take a NULL 'dev' so this can work.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
diff --git a/include/linux/device.h b/include/linux/device.h
index b425a7e..0370dd0 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1231,7 +1231,7 @@
static inline struct device_node *dev_of_node(struct device *dev)
{
- if (!IS_ENABLED(CONFIG_OF))
+ if (!IS_ENABLED(CONFIG_OF) || !dev)
return NULL;
return dev->of_node;
}