Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (79 commits)
  USB serial: update the console driver
  usb-serial: straighten out serial_open
  usb-serial: add missing tests and debug lines
  usb-serial: rename subroutines
  usb-serial: fix termios initialization logic
  usb-serial: acquire references when a new tty is installed
  usb-serial: change logic of serial lookups
  usb-serial: put subroutines in logical order
  usb-serial: change referencing of port and serial structures
  tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl
  tty: Char: mxser, add support for CP112UL
  uartlite: support shared interrupt lines
  tty: USB: serial/mct_u232, fix tty refcnt
  tty: riscom8, fix tty refcnt
  tty: riscom8, fix shutdown declaration
  TTY: fix typos
  tty: Power: fix suspend vt regression
  tty: vt: use printk_once
  tty: handle VT specific compat ioctls in vt driver
  n_tty: move echoctl check and clean up logic
  ...

2 files changed, 6 insertions, 59 deletions

diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 26539e3228e..3765ff3c1bb 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -117,7 +117,7 @@ EXPORT_SYMBOL(kfifo_free);
  * writer, you don't need extra locking to use these functions.
  */
 unsigned int __kfifo_put(struct kfifo *fifo,
-			 unsigned char *buffer, unsigned int len)
+			const unsigned char *buffer, unsigned int len)
 {
 	unsigned int l;
 
diff --git a/kernel/power/console.c b/kernel/power/console.c
index a3961b205de..5187136fe1d 100644
--- a/kernel/power/console.c
+++ b/kernel/power/console.c
@@ -14,56 +14,13 @@
 #define SUSPEND_CONSOLE	(MAX_NR_CONSOLES-1)
 
 static int orig_fgconsole, orig_kmsg;
-static int disable_vt_switch;
-
-/*
- * Normally during a suspend, we allocate a new console and switch to it.
- * When we resume, we switch back to the original console.  This switch
- * can be slow, so on systems where the framebuffer can handle restoration
- * of video registers anyways, there's little point in doing the console
- * switch.  This function allows you to disable it by passing it '0'.
- */
-void pm_set_vt_switch(int do_switch)
-{
-	acquire_console_sem();
-	disable_vt_switch = !do_switch;
-	release_console_sem();
-}
-EXPORT_SYMBOL(pm_set_vt_switch);
 
 int pm_prepare_console(void)
 {
-	acquire_console_sem();
-
-	if (disable_vt_switch) {
-		release_console_sem();
-		return 0;
-	}
-
-	orig_fgconsole = fg_console;
-
-	if (vc_allocate(SUSPEND_CONSOLE)) {
-	  /* we can't have a free VC for now. Too bad,
-	   * we don't want to mess the screen for now. */
-		release_console_sem();
+	orig_fgconsole = vt_move_to_console(SUSPEND_CONSOLE, 1);
+	if (orig_fgconsole < 0)
 		return 1;
-	}
 
-	if (set_console(SUSPEND_CONSOLE)) {
-		/*
-		 * We're unable to switch to the SUSPEND_CONSOLE.
-		 * Let the calling function know so it can decide
-		 * what to do.
-		 */
-		release_console_sem();
-		return 1;
-	}
-	release_console_sem();
-
-	if (vt_waitactive(SUSPEND_CONSOLE)) {
-		pr_debug("Suspend: Can't switch VCs.");
-		return 1;
-	}
 	orig_kmsg = kmsg_redirect;
 	kmsg_redirect = SUSPEND_CONSOLE;
 	return 0;
@@ -71,19 +28,9 @@ int pm_prepare_console(void)
 
 void pm_restore_console(void)
 {
-	acquire_console_sem();
-	if (disable_vt_switch) {
-		release_console_sem();
-		return;
-	}
-	set_console(orig_fgconsole);
-	release_console_sem();
-
-	if (vt_waitactive(orig_fgconsole)) {
-		pr_debug("Resume: Can't switch VCs.");
-		return;
+	if (orig_fgconsole >= 0) {
+		vt_move_to_console(orig_fgconsole, 0);
+		kmsg_redirect = orig_kmsg;
 	}
-
-	kmsg_redirect = orig_kmsg;
 }
 #endif