console: rename acquire/release_console_sem() to console_lock/unlock()

The -rt patches change the console_semaphore to console_mutex.  As a
result, a quite large chunk of the patches changes all
acquire/release_console_sem() to acquire/release_console_mutex()

This commit makes things use more neutral function names which dont make
implications about the underlying lock.

The only real change is the return value of console_trylock which is
inverted from try_acquire_console_sem()

This patch also paves the way to switching console_sem from a semaphore to
a mutex.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Thomas Gleixner <tglx@tglx.de>
Cc: Greg KH <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/vt8623fb.c

@@ -23,7 +23,7 @@
 #include <linux/svga.h>
 #include <linux/init.h>
 #include <linux/pci.h>
-#include <linux/console.h> /* Why should fb driver call console functions? because acquire_console_sem() */
+#include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */
 #include <video/vga.h>
 
 #ifdef CONFIG_MTRR
@@ -819,12 +819,12 @@ static int vt8623_pci_suspend(struct pci_dev* dev, pm_message_t state)
 
 	dev_info(info->device, "suspend\n");
 
-	acquire_console_sem();
+	console_lock();
 	mutex_lock(&(par->open_lock));
 
 	if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) {
 		mutex_unlock(&(par->open_lock));
-		release_console_sem();
+		console_unlock();
 		return 0;
 	}
 
@@ -835,7 +835,7 @@ static int vt8623_pci_suspend(struct pci_dev* dev, pm_message_t state)
 	pci_set_power_state(dev, pci_choose_state(dev, state));
 
 	mutex_unlock(&(par->open_lock));
-	release_console_sem();
+	console_unlock();
 
 	return 0;
 }
@@ -850,7 +850,7 @@ static int vt8623_pci_resume(struct pci_dev* dev)
 
 	dev_info(info->device, "resume\n");
 
-	acquire_console_sem();
+	console_lock();
 	mutex_lock(&(par->open_lock));
 
 	if (par->ref_count == 0)
@@ -869,7 +869,7 @@ static int vt8623_pci_resume(struct pci_dev* dev)
 
 fail:
 	mutex_unlock(&(par->open_lock));
-	release_console_sem();
+	console_unlock();
 
 	return 0;
 }