linux-kernel - [PATCH v4 4/9] driver core: Let dev_of

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Message-Id: <20190412183150.102131-5-sboyd@kernel.org>
Date:   Fri, 12 Apr 2019 11:31:45 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Russell King <linux@...linux.org.uk>,
        Jeffrey Hugo <jhugo@...eaurora.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v4 4/9] 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@...tlin.com>
Cc: Jerome Brunet <jbrunet@...libre.com>
Cc: Russell King <linux@...linux.org.uk>
Cc: Michael Turquette <mturquette@...libre.com>
Cc: Jeffrey Hugo <jhugo@...eaurora.org>
Cc: Chen-Yu Tsai <wens@...e.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Rob Herring <robh@...nel.org>
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
---

Please ack/review so I can take this through clk tree.

 include/linux/device.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/device.h b/include/linux/device.h
index b425a7ee04ce..0370dd0b3ae7 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -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;
 }
-- 
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