kfifo: move out spinlock

Move the pointer to the spinlock out of struct kfifo.  Most users in
tree do not actually use a spinlock, so the few exceptions now have to
call kfifo_{get,put}_locked, which takes an extra argument to a
spinlock.

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>

1 files changed, 12 insertions, 9 deletions

diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 9e6efb1..dbcb3bd 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -777,8 +777,9 @@ static void input_keyrelease(struct work_struct *work)
 {
 	struct sonypi_keypress kp;
 
-	while (kfifo_get(&sonypi_device.input_fifo, (unsigned char *)&kp,
-			 sizeof(kp)) == sizeof(kp)) {
+	while (kfifo_get_locked(&sonypi_device.input_fifo, (unsigned char *)&kp,
+			 sizeof(kp), &sonypi_device.input_fifo_lock)
+			== sizeof(kp)) {
 		msleep(10);
 		input_report_key(kp.dev, kp.key, 0);
 		input_sync(kp.dev);
@@ -827,8 +828,9 @@ static void sonypi_report_input_event(u8 event)
 	if (kp.dev) {
 		input_report_key(kp.dev, kp.key, 1);
 		input_sync(kp.dev);
-		kfifo_put(&sonypi_device.input_fifo,
-			  (unsigned char *)&kp, sizeof(kp));
+		kfifo_put_locked(&sonypi_device.input_fifo,
+			(unsigned char *)&kp, sizeof(kp),
+			&sonypi_device.input_fifo_lock);
 		schedule_work(&sonypi_device.input_work);
 	}
 }
@@ -880,7 +882,8 @@ found:
 		acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event);
 #endif
 
-	kfifo_put(&sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
+	kfifo_put_locked(&sonypi_device.fifo, (unsigned char *)&event,
+			sizeof(event), &sonypi_device.fifo_lock);
 	kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
 	wake_up_interruptible(&sonypi_device.fifo_proc_list);
 
@@ -929,7 +932,8 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
 		return ret;
 
 	while (ret < count &&
-	       (kfifo_get(&sonypi_device.fifo, &c, sizeof(c)) == sizeof(c))) {
+	       (kfifo_get_locked(&sonypi_device.fifo, &c, sizeof(c),
+				 &sonypi_device.fifo_lock) == sizeof(c))) {
 		if (put_user(c, buf++))
 			return -EFAULT;
 		ret++;
@@ -1313,8 +1317,7 @@ static int __devinit sonypi_probe(struct platform_device *dev)
 			"http://www.linux.it/~malattia/wiki/index.php/Sony_drivers\n");
 
 	spin_lock_init(&sonypi_device.fifo_lock);
-	error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL,
-					 &sonypi_device.fifo_lock);
+	error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL);
 	if (error) {
 		printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
 		return error;
@@ -1394,7 +1397,7 @@ static int __devinit sonypi_probe(struct platform_device *dev)
 
 		spin_lock_init(&sonypi_device.input_fifo_lock);
 		error = kfifo_alloc(&sonypi_device.input_fifo, SONYPI_BUF_SIZE,
-				GFP_KERNEL, &sonypi_device.input_fifo_lock);
+				GFP_KERNEL);
 		if (error) {
 			printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
 			goto err_inpdev_unregister;