Commit 401097ea authored May 12, 2009 by Shaohua Li Committed by Greg Kroah-Hartman Jun 15, 2009

driver core: synchronize device shutdown



A patch series to make .shutdown execute asynchronously.  Some drivers's
shutdown can take a lot of time.  The patches can help save some shutdown
time.  The patches use Arjan's async API.


This patch:

synchronize all tasks submitted by .shutdown

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 400ced61

drivers/base/core.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@
		#include <linux/kallsyms.h>
		#include <linux/semaphore.h>
		#include <linux/mutex.h>
		#include <linux/async.h>

		#include "base.h"
		#include "power/power.h"
		@@ -1665,4 +1666,5 @@ void device_shutdown(void)
		kobject_put(sysfs_dev_char_kobj);
		kobject_put(sysfs_dev_block_kobj);
		kobject_put(dev_kobj);
		async_synchronize_full();
		}