---

yaml
---
r: 27435
b: refs/heads/master
c: 2090af7
h: refs/heads/master
i:
  27433: a518bb0
  27431: 5d855cf
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4b6ace7f02cddb8c363ad27bb1e5014c6791e34a
+refs/heads/master: 2090af718014f3d434fb8b85b00eeea01ebcec19

trunk/drivers/acpi/pci_link.c

@@ -812,6 +812,9 @@ static int irqrouter_resume(struct sys_device *dev)
 
 	ACPI_FUNCTION_TRACE("irqrouter_resume");
 
+	/* Make sure SCI is enabled again (Apple firmware bug?) */
+	acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
+
 	acpi_in_resume = 1;
 	list_for_each(node, &acpi_link.entries) {
 		link = list_entry(node, struct acpi_pci_link, node);

trunk/drivers/scsi/libata-core.c

@@ -4297,6 +4297,7 @@ static int ata_start_drive(struct ata_port *ap, struct ata_device *dev)
 int ata_device_resume(struct ata_port *ap, struct ata_device *dev)
 {
 	if (ap->flags & ATA_FLAG_SUSPENDED) {
+		ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
 		ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);
 		ap->flags &= ~ATA_FLAG_SUSPENDED;
 		ata_set_mode(ap);

trunk/include/linux/console.h

@@ -117,6 +117,10 @@ extern void console_stop(struct console *);
 extern void console_start(struct console *);
 extern int is_console_locked(void);
 
+/* Suspend and resume console messages over PM events */
+extern void suspend_console(void);
+extern void resume_console(void);
+
 /* Some debug stub to catch some of the obvious races in the VT code */
 #if 1
 #define WARN_CONSOLE_UNLOCKED()	WARN_ON(!is_console_locked() && !oops_in_progress)

trunk/kernel/power/main.c

@@ -86,6 +86,7 @@ static int suspend_prepare(suspend_state_t state)
 			goto Thaw;
 	}
 
+	suspend_console();
 	if ((error = device_suspend(PMSG_SUSPEND))) {
 		printk(KERN_ERR "Some devices failed to suspend\n");
 		goto Finish;
@@ -133,6 +134,7 @@ int suspend_enter(suspend_state_t state)
 static void suspend_finish(suspend_state_t state)
 {
 	device_resume();
+	resume_console();
 	thaw_processes();
 	enable_nonboot_cpus();
 	if (pm_ops && pm_ops->finish)

trunk/kernel/printk.c

@@ -67,6 +67,7 @@ EXPORT_SYMBOL(oops_in_progress);
  * driver system.
  */
 static DECLARE_MUTEX(console_sem);
+static DECLARE_MUTEX(secondary_console_sem);
 struct console *console_drivers;
 /*
  * This is used for debugging the mess that is the VT code by
@@ -76,7 +77,7 @@ struct console *console_drivers;
  * path in the console code where we end up in places I want
  * locked without the console sempahore held
  */
-static int console_locked;
+static int console_locked, console_suspended;
 
 /*
  * logbuf_lock protects log_buf, log_start, log_end, con_start and logged_chars
@@ -697,6 +698,23 @@ int __init add_preferred_console(char *name, int idx, char *options)
 	return 0;
 }
 
+/**
+ * suspend_console - suspend the console subsystem
+ *
+ * This disables printk() while we go into suspend states
+ */
+void suspend_console(void)
+{
+	acquire_console_sem();
+	console_suspended = 1;
+}
+
+void resume_console(void)
+{
+	console_suspended = 0;
+	release_console_sem();
+}
+
 /**
  * acquire_console_sem - lock the console system for exclusive use.
  *
@@ -708,6 +726,10 @@ int __init add_preferred_console(char *name, int idx, char *options)
 void acquire_console_sem(void)
 {
 	BUG_ON(in_interrupt());
+	if (console_suspended) {
+		down(&secondary_console_sem);
+		return;
+	}
 	down(&console_sem);
 	console_locked = 1;
 	console_may_schedule = 1;
@@ -750,6 +772,10 @@ void release_console_sem(void)
 	unsigned long _con_start, _log_end;
 	unsigned long wake_klogd = 0;
 
+	if (console_suspended) {
+		up(&secondary_console_sem);
+		return;
+	}
 	for ( ; ; ) {
 		spin_lock_irqsave(&logbuf_lock, flags);
 		wake_klogd |= log_start - log_end;