kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out...

rename kfifo_put...  into kfifo_in...  to prevent miss use of old non in
kernel-tree drivers

ditto for kfifo_get...  -> kfifo_out...

Improve the prototypes of kfifo_in and kfifo_out to make the kerneldoc
annotations more readable.

Add mini "howto porting to the new API" in kfifo.h

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 13dc7be..b66029b 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -1006,7 +1006,7 @@
 				vdbg_printk(FUJLAPTOP_DBG_TRACE,
 					"Push keycode into ringbuffer [%d]\n",
 					keycode);
-				status = kfifo_put_locked(&fujitsu_hotkey->fifo,
+				status = kfifo_in_locked(&fujitsu_hotkey->fifo,
 						   (unsigned char *)&keycode,
 						   sizeof(keycode),
 						   &fujitsu_hotkey->fifo_lock);
@@ -1020,7 +1020,7 @@
 				}
 			} else if (keycode == 0) {
 				while ((status =
-					kfifo_get_locked(
+					kfifo_out_locked(
 					 &fujitsu_hotkey->fifo,
 					 (unsigned char *) &keycode_r,
 					 sizeof(keycode_r),
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 36e5dc6..2896ca4 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -300,7 +300,7 @@
 {
 	struct sony_laptop_keypress kp;
 
-	while (kfifo_get_locked(&sony_laptop_input.fifo, (unsigned char *)&kp,
+	while (kfifo_out_locked(&sony_laptop_input.fifo, (unsigned char *)&kp,
 			sizeof(kp), &sony_laptop_input.fifo_lock)
 			== sizeof(kp)) {
 		msleep(10);
@@ -363,7 +363,7 @@
 		/* we emit the scancode so we can always remap the key */
 		input_event(kp.dev, EV_MSC, MSC_SCAN, event);
 		input_sync(kp.dev);
-		kfifo_put_locked(&sony_laptop_input.fifo,
+		kfifo_in_locked(&sony_laptop_input.fifo,
 			  (unsigned char *)&kp, sizeof(kp),
 			  &sony_laptop_input.fifo_lock);
 
@@ -2130,7 +2130,7 @@
 		return ret;
 
 	while (ret < count &&
-	       (kfifo_get_locked(&sonypi_compat.fifo, &c, sizeof(c),
+	       (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
 			  &sonypi_compat.fifo_lock) == sizeof(c))) {
 		if (put_user(c, buf++))
 			return -EFAULT;
@@ -2310,7 +2310,7 @@
 
 static void sonypi_compat_report_event(u8 event)
 {
-	kfifo_put_locked(&sonypi_compat.fifo, (unsigned char *)&event,
+	kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
 			sizeof(event), &sonypi_compat.fifo_lock);
 	kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
 	wake_up_interruptible(&sonypi_compat.fifo_proc_list);