linux-kernel - [PATCH 2/3] drivers/class: Add Legacy PM OPS usage check and warning to __class

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <17d82f384b7165fce260f63d8a57c4469d392c1c.1383868060.git.shuah.kh@samsung.com>
Date:	Thu,  7 Nov 2013 17:03:49 -0700
From:	Shuah Khan <shuah.kh@...sung.com>
To:	gregkh@...uxfoundation.org, rjw@...ysocki.net
Cc:	Shuah Khan <shuah.kh@...sung.com>, shuahkhan@...il.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] drivers/class: Add Legacy PM OPS usage check and warning to __class_register()

Add Legacy PM OPS usage checks to __class_register() function. If Legacy PM OPS
usage is found, print warning message to indicate the driver code needs
updating to use Dev PM OPS interfaces. This will help serve as a way to track
drivers that still use Legacy PM OPS and fix them.

The Legacy PM OPS check looks for suspend(struct device *, pm_message_t) or
resume(struct device *) class level interfaces.

Signed-off-by: Shuah Khan <shuah.kh@...sung.com>
---
 drivers/base/class.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 8b7818b..f26a3f2 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -180,6 +180,10 @@ int __class_register(struct class *cls, struct lock_class_key *key)
 
 	pr_debug("device class '%s': registering\n", cls->name);
 
+	if (cls->suspend || cls->resume)
+		pr_warn("device class '%s': Please update to use dev pm ops\n",
+			cls->name);
+
 	cp = kzalloc(sizeof(*cp), GFP_KERNEL);
 	if (!cp)
 		return -ENOMEM;
-- 
1.8.3.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/