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driver core: Let dev_of_node() accept a NULL dev

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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>
This commit is contained in:
Stephen Boyd 2019-04-12 11:31:45 -07:00
parent fceaa7d800
commit 1b833924e5
1 changed files with 1 additions and 1 deletions
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2
include/linux/device.h
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@ -1231,7 +1231,7 @@ static inline void device_lock_assert(struct device *dev)
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;
}