linux-kernel - [PATCH 1/2] driver core: Add dev_WARN

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Message-Id: <20191120143619.1027-2-geert+renesas@glider.be>
Date:   Wed, 20 Nov 2019 15:36:18 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 1/2] driver core: Add dev_WARN_ON() helper

It is quite useful to print the related device in a warning backtrace.
Hence add a "dev_*" variant of WARN_ON() to handle this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 include/linux/device.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index f05c5b92e61f535a..05089c329620472a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1902,6 +1902,9 @@ do {									\
 	WARN_ONCE(condition, "%s %s: " format, \
 			dev_driver_string(dev), dev_name(dev), ## arg)
 
+#define dev_WARN_ON(dev, condition) \
+	WARN(condition, "%s %s", dev_driver_string(dev), dev_name(dev))
+
 /* Create alias, so I can be autoloaded. */
 #define MODULE_ALIAS_CHARDEV(major,minor) \
 	MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor))
-- 
2.17.1