linux-kernel - [PATCH 4.14 38/52] extcon: Add stubs for extcon_register_notifier

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Message-Id: <20210405085023.227582602@linuxfoundation.org>
Date:   Mon,  5 Apr 2021 10:54:04 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 38/52] extcon: Add stubs for extcon_register_notifier_all() functions

From: Krzysztof Kozlowski <krzk@...nel.org>

[ Upstream commit c9570d4a5efd04479b3cd09c39b571eb031d94f4 ]

Add stubs for extcon_register_notifier_all() function for !CONFIG_EXTCON
case.  This is useful for compile testing and for drivers which use
EXTCON but do not require it (therefore do not depend on CONFIG_EXTCON).

Fixes: 815429b39d94 ("extcon: Add new extcon_register_notifier_all() to monitor all external connectors")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/linux/extcon.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 744d60ca80c3..8f4dc784ab90 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -377,6 +377,29 @@ static inline  void devm_extcon_unregister_notifier(struct device *dev,
 				struct extcon_dev *edev, unsigned int id,
 				struct notifier_block *nb) { }
 
+static inline int extcon_register_notifier_all(struct extcon_dev *edev,
+					       struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int extcon_unregister_notifier_all(struct extcon_dev *edev,
+						 struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int devm_extcon_register_notifier_all(struct device *dev,
+						    struct extcon_dev *edev,
+						    struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline void devm_extcon_unregister_notifier_all(struct device *dev,
+						       struct extcon_dev *edev,
+						       struct notifier_block *nb) { }
+
 static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name)
 {
 	return ERR_PTR(-ENODEV);
-- 
2.30.2