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authorAkinobu Mita <akinobu.mita@gmail.com>2011-07-08 20:53:36 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-07-15 23:58:20 +0200
commitf0c077a8b7f9dce590c760a7b2f3c417dffa52d1 (patch)
treeef6d08aa3ca1d79000db7d7479d98bda04a11c78 /kernel/power/main.c
parentPM: Add "RTC" to PM trace time stamps to avoid confusion (diff)
downloadlinux-f0c077a8b7f9dce590c760a7b2f3c417dffa52d1.tar.xz
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PM: Improve error code of pm_notifier_call_chain()
This enables pm_notifier_call_chain() to get the actual error code in the callback rather than always assume -EINVAL by converting all PM notifier calls to return encapsulate error code with notifier_from_errno(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/main.c')
-rw-r--r--kernel/power/main.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 2981af4ce7cb..6c601f871964 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -37,8 +37,9 @@ EXPORT_SYMBOL_GPL(unregister_pm_notifier);
int pm_notifier_call_chain(unsigned long val)
{
- return (blocking_notifier_call_chain(&pm_chain_head, val, NULL)
- == NOTIFY_BAD) ? -EINVAL : 0;
+ int ret = blocking_notifier_call_chain(&pm_chain_head, val, NULL);
+
+ return notifier_to_errno(ret);
}
/* If set, devices may be suspended and resumed asynchronously. */