linux-kernel - [RFC PATCH 53/57] drivers: Introduce bus_find_next

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Message-Id: <1559577023-558-54-git-send-email-suzuki.poulose@arm.com>
Date:   Mon,  3 Jun 2019 16:50:19 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, rafael@...nel.org,
        suzuki.poulose@....com,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [RFC PATCH 53/57] drivers: Introduce bus_find_next_device() helper

Add a helper to find the next device on the given bus from a
given device iterator position.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 include/linux/device.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 7ea15e6..528efc0 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -234,6 +234,16 @@ static inline struct device *bus_find_device_by_devt(struct bus_type *bus,
 	return bus_find_device(bus, start, &devt, device_match_devt);
 }
 
+/**
+ * bus_find_next_device - Find the next device after a given device in a
+ * given bus.
+ */
+static inline struct device *bus_find_next_device(struct bus_type *bus,
+						  struct device *start)
+{
+	return bus_find_device(bus, start, NULL, device_match_any);
+}
+
 struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id,
 					struct device *hint);
 int bus_for_each_drv(struct bus_type *bus, struct device_driver *start,
-- 
2.7.4