PM: Remove legacy PM

AFAICT pm_send_all is a nop when noone uses pm_register...

Hmm.. can we just force CONFIG_PM_LEGACY=n, and see what happens?

Or maybe this is better idea? It may break build somewhere, but it
should be easy to fix... (it builds here, i386 and x86-64).

Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

arch/frv/kernel/pm.c

@@ -163,14 +163,11 @@ static int sysctl_pm_do_suspend(ctl_table *ctl, int write, struct file *filp,
 	if ((mode != 1) && (mode != 5))
 		return -EINVAL;
 
-	retval = pm_send_all(PM_SUSPEND, (void *)3);
-
 	if (retval == 0) {
 		if (mode == 5)
 		    retval = pm_do_bus_sleep();
 		else
 		    retval = pm_do_suspend();
-		pm_send_all(PM_RESUME, (void *)0);
 	}
 
 	return retval;
@@ -183,9 +180,6 @@ static int try_set_cmode(int new_cmode)
 	if (!(clock_cmodes_permitted & (1<<new_cmode)))
 		return -EINVAL;
 
-	/* tell all the drivers we're suspending */
-	pm_send_all(PM_SUSPEND, (void *)3);
-
 	/* now change cmode */
 	local_irq_disable();
 	frv_dma_pause_all();
@@ -201,8 +195,6 @@ static int try_set_cmode(int new_cmode)
 	frv_dma_resume_all();
 	local_irq_enable();
 
-	/* tell all the drivers we're resuming */
-	pm_send_all(PM_RESUME, (void *)0);
 	return 0;
 }
 

arch/mips/au1000/common/power.c

@@ -258,7 +258,6 @@ int au_sleep(void)
 static int pm_do_sleep(ctl_table * ctl, int write, struct file *file,
 		       void __user *buffer, size_t * len, loff_t *ppos)
 {
-	int retval = 0;
 #ifdef SLEEP_TEST_TIMEOUT
 #define TMPBUFLEN2 16
 	char buf[TMPBUFLEN2], *p;
@@ -278,33 +277,21 @@ static int pm_do_sleep(ctl_table * ctl, int write, struct file *file,
 		p = buf;
 		sleep_ticks = simple_strtoul(p, &p, 0);
 #endif
-		retval = pm_send_all(PM_SUSPEND, (void *) 2);
-
-		if (retval)
-			return retval;
 
 		au_sleep();
-		retval = pm_send_all(PM_RESUME, (void *) 0);
 	}
-	return retval;
+	return 0;
 }
 
 static int pm_do_suspend(ctl_table * ctl, int write, struct file *file,
 			 void __user *buffer, size_t * len, loff_t *ppos)
 {
-	int retval = 0;
-
 	if (!write) {
 		*len = 0;
 	} else {
-		retval = pm_send_all(PM_SUSPEND, (void *) 2);
-		if (retval)
-			return retval;
 		suspend_mode = 1;
-
-		retval = pm_send_all(PM_RESUME, (void *) 0);
 	}
-	return retval;
+	return 0;
 }
 
 

arch/x86/kernel/apm_32.c

@@ -1189,19 +1189,6 @@ static int suspend(int vetoable)
 	int err;
 	struct apm_user	*as;
 
-	if (pm_send_all(PM_SUSPEND, (void *)3)) {
-		/* Vetoed */
-		if (vetoable) {
-			if (apm_info.connection_version > 0x100)
-				set_system_power_state(APM_STATE_REJECT);
-			err = -EBUSY;
-			ignore_sys_suspend = 0;
-			printk(KERN_WARNING "apm: suspend was vetoed.\n");
-			goto out;
-		}
-		printk(KERN_CRIT "apm: suspend was vetoed, but suspending anyway.\n");
-	}
-
 	device_suspend(PMSG_SUSPEND);
 	local_irq_disable();
 	device_power_down(PMSG_SUSPEND);
@@ -1224,7 +1211,6 @@ static int suspend(int vetoable)
 	device_power_up();
 	local_irq_enable();
 	device_resume();
-	pm_send_all(PM_RESUME, (void *)0);
 	queue_event(APM_NORMAL_RESUME, NULL);
  out:
 	spin_lock(&user_list_lock);
@@ -1337,7 +1323,6 @@ static void check_events(void)
 			if ((event != APM_NORMAL_RESUME)
 			    || (ignore_normal_resume == 0)) {
 				device_resume();
-				pm_send_all(PM_RESUME, (void *)0);
 				queue_event(event, NULL);
 			}
 			ignore_normal_resume = 0;

kernel/power/Kconfig

@@ -19,16 +19,6 @@ config PM
 	  will issue the hlt instruction if nothing is to be done, thereby
 	  sending the processor to sleep and saving power.
 
-config PM_LEGACY
-	bool "Legacy Power Management API (DEPRECATED)"
-	depends on PM
-	default n
-	---help---
-	   Support for pm_register() and friends.  This old API is obsoleted
-	   by the driver model.
-
-	   If unsure, say N.
-
 config PM_DEBUG
 	bool "Power Management Debug Support"
 	depends on PM

kernel/power/Makefile

@@ -4,7 +4,6 @@ EXTRA_CFLAGS	+=	-DDEBUG
 endif
 
 obj-y				:= main.o
-obj-$(CONFIG_PM_LEGACY)		+= pm.o
 obj-$(CONFIG_PM_SLEEP)		+= process.o console.o
 obj-$(CONFIG_HIBERNATION)	+= swsusp.o disk.o snapshot.o swap.o user.o