Re: [PATCH, RFC] [1/3] Generic in-kernel AC status
From: Philipp Matthias Hahn <hidden>
Date: 2006-02-08 22:26:04
Also in:
linux-acpi, lkml
Hi! On Wed, Feb 08, 2006 at 01:04:22PM +0000, Matthew Garrett wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/pm.h b/include/linux/pm.h
...
+void pm_set_ac_status(int (*ac_status_function)(void))
+{
+ down(&pm_sem);
+ get_ac_status = ac_status_function;
+ up(&pm_sem);
+}Why do you need a semaphore/mutex, when you only do one assignment, which is atomic by itself? BYtE Philipp -- / / (_)__ __ ____ __ Philipp Hahn / /__/ / _ \/ // /\ \/ / /____/_/_//_/\_,_/ /_/\_\ pmhahn@titan.lahn.de