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PM: Improve error code of pm_notifier_call_chain()

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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>
This commit is contained in:
Akinobu Mita
2011-07-08 20:53:36 +02:00
committed by Rafael J. Wysocki
parent 1d8047a6f7
commit f0c077a8b7
4 changed files with 10 additions and 9 deletions
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8
drivers/s390/cio/css.c
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@@ -814,8 +814,8 @@ static int css_power_event(struct notifier_block *this, unsigned long event,
mutex_unlock(&css->mutex);
continue;
}
if (__chsc_do_secm(css, 0))
ret = NOTIFY_BAD;
ret = __chsc_do_secm(css, 0);
ret = notifier_from_errno(ret);
mutex_unlock(&css->mutex);
}
break;
@@ -831,8 +831,8 @@ static int css_power_event(struct notifier_block *this, unsigned long event,
mutex_unlock(&css->mutex);
continue;
}
if (__chsc_do_secm(css, 1))
ret = NOTIFY_BAD;
ret = __chsc_do_secm(css, 1);
ret = notifier_from_errno(ret);
mutex_unlock(&css->mutex);
}
/* search for subchannels, which appeared during hibernation */