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author | Akinobu Mita <akinobu.mita@gmail.com> | 2011-07-08 18:53:36 (GMT) |
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committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-07-15 21:58:20 (GMT) |
commit | f0c077a8b7f9dce590c760a7b2f3c417dffa52d1 (patch) | |
tree | ef6d08aa3ca1d79000db7d7479d98bda04a11c78 /drivers | |
parent | 1d8047a6f7973470bb1de4606a6e00c0bbee3cc6 (diff) | |
download | linux-f0c077a8b7f9dce590c760a7b2f3c417dffa52d1.tar.xz |
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 'drivers')
-rw-r--r-- | drivers/char/apm-emulation.c | 2 | ||||
-rw-r--r-- | drivers/s390/char/vmwatchdog.c | 4 | ||||
-rw-r--r-- | drivers/s390/cio/css.c | 8 |
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index 548708c..a7346ab 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -606,7 +606,7 @@ static int apm_suspend_notifier(struct notifier_block *nb, return NOTIFY_OK; /* interrupted by signal */ - return NOTIFY_BAD; + return notifier_from_errno(err); case PM_POST_SUSPEND: /* diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c index 12ef912..11312f4 100644 --- a/drivers/s390/char/vmwatchdog.c +++ b/drivers/s390/char/vmwatchdog.c @@ -258,13 +258,13 @@ static int vmwdt_suspend(void) if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open)) { pr_err("The system cannot be suspended while the watchdog" " is in use\n"); - return NOTIFY_BAD; + return notifier_from_errno(-EBUSY); } if (test_bit(VMWDT_RUNNING, &vmwdt_is_open)) { clear_bit(VMWDT_OPEN, &vmwdt_is_open); pr_err("The system cannot be suspended while the watchdog" " is running\n"); - return NOTIFY_BAD; + return notifier_from_errno(-EBUSY); } return NOTIFY_DONE; } diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index c47b25f..92d7324 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -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 */ |