From 70b52b3869a31aab85241a1f998f9943a3905637 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 19 Mar 2007 11:53:55 +0100 Subject: [POWERPC] powermac: disallow pmu sleep notifiers from aborting sleep Tracing through the code, no current PMU sleep notifier can abort sleep. Since no new PMU sleep notifiers should be added, this patch simplifies the code and removes the ability to abort sleep. Signed-off-by: Johannes Berg Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- drivers/macintosh/via-pmu.c | 36 ++++++------------------------------ 1 file changed, 6 insertions(+), 30 deletions(-) (limited to 'drivers/macintosh/via-pmu.c') diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index b6073bdb50c..ca3c4aba5a2 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -1769,35 +1769,21 @@ EXPORT_SYMBOL(pmu_unregister_sleep_notifier); #if defined(CONFIG_PM) && defined(CONFIG_PPC32) /* Sleep is broadcast last-to-first */ -static int -broadcast_sleep(int when, int fallback) +static void broadcast_sleep(int when) { - int ret = PBOOK_SLEEP_OK; struct list_head *list; struct pmu_sleep_notifier *notifier; for (list = sleep_notifiers.prev; list != &sleep_notifiers; list = list->prev) { notifier = list_entry(list, struct pmu_sleep_notifier, list); - ret = notifier->notifier_call(notifier, when); - if (ret != PBOOK_SLEEP_OK) { - printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n", - when, notifier, notifier->notifier_call); - for (; list != &sleep_notifiers; list = list->next) { - notifier = list_entry(list, struct pmu_sleep_notifier, list); - notifier->notifier_call(notifier, fallback); - } - return ret; - } + notifier->notifier_call(notifier, when); } - return ret; } /* Wake is broadcast first-to-last */ -static int -broadcast_wake(void) +static void broadcast_wake(void) { - int ret = PBOOK_SLEEP_OK; struct list_head *list; struct pmu_sleep_notifier *notifier; @@ -1806,7 +1792,6 @@ broadcast_wake(void) notifier = list_entry(list, struct pmu_sleep_notifier, list); notifier->notifier_call(notifier, PBOOK_WAKE); } - return ret; } /* @@ -2013,12 +1998,8 @@ pmac_suspend_devices(void) pm_prepare_console(); - /* Notify old-style device drivers & userland */ - ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT); - if (ret != PBOOK_SLEEP_OK) { - printk(KERN_ERR "Sleep rejected by drivers\n"); - return -EBUSY; - } + /* Notify old-style device drivers */ + broadcast_sleep(PBOOK_SLEEP_REQUEST); /* Sync the disks. */ /* XXX It would be nice to have some way to ensure that @@ -2028,12 +2009,7 @@ pmac_suspend_devices(void) */ sys_sync(); - /* Sleep can fail now. May not be very robust but useful for debugging */ - ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE); - if (ret != PBOOK_SLEEP_OK) { - printk(KERN_ERR "Driver sleep failed\n"); - return -EBUSY; - } + broadcast_sleep(PBOOK_SLEEP_NOW); /* Send suspend call to devices, hold the device core's dpm_sem */ ret = device_suspend(PMSG_SUSPEND); -- cgit v1.2.3