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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2011-07-08 20:53:36 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-07-15 23:58:20 +0200 |
| commit | f0c077a8b7f9dce590c760a7b2f3c417dffa52d1 (patch) | |
| tree | ef6d08aa3ca1d79000db7d7479d98bda04a11c78 /kernel/power | |
| parent | 1d8047a6f7973470bb1de4606a6e00c0bbee3cc6 (diff) | |
| download | lwn-f0c077a8b7f9dce590c760a7b2f3c417dffa52d1.tar.gz lwn-f0c077a8b7f9dce590c760a7b2f3c417dffa52d1.zip | |
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')
| -rw-r--r-- | kernel/power/main.c | 5 |
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. */ |