1 files changed, 52 insertions, 39 deletions

diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index c1070e33b32f..c4a4cdc07ab9 100644
--- a/sound/oss/au1550_ac97.c
+++ b/sound/oss/au1550_ac97.c
@@ -43,6 +43,7 @@
 #include <linux/sound.h>
 #include <linux/slab.h>
 #include <linux/soundcard.h>
+#include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -162,19 +163,10 @@ ld2(unsigned int x)
 static void
 au1550_delay(int msec)
 {
-	unsigned long   tmo;
-	signed long     tmo2;
-
 	if (in_interrupt())
 		return;
 
-	tmo = jiffies + (msec * HZ) / 1000;
-	for (;;) {
-		tmo2 = tmo - jiffies;
-		if (tmo2 <= 0)
-			break;
-		schedule_timeout(tmo2);
-	}
+	schedule_timeout_uninterruptible(msecs_to_jiffies(msec));
 }
 
 static u16
@@ -807,7 +799,9 @@ au1550_llseek(struct file *file, loff_t offset, int origin)
 static int
 au1550_open_mixdev(struct inode *inode, struct file *file)
 {
+	lock_kernel();
 	file->private_data = &au1550_state;
+	unlock_kernel();
 	return 0;
 }
 
@@ -824,22 +818,26 @@ mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
 	return codec->mixer_ioctl(codec, cmd, arg);
 }
 
-static int
-au1550_ioctl_mixdev(struct inode *inode, struct file *file,
-			       unsigned int cmd, unsigned long arg)
+static long
+au1550_ioctl_mixdev(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	struct au1550_state *s = (struct au1550_state *)file->private_data;
 	struct ac97_codec *codec = s->codec;
+	int ret;
 
-	return mixdev_ioctl(codec, cmd, arg);
+	lock_kernel();
+	ret = mixdev_ioctl(codec, cmd, arg);
+	unlock_kernel();
+
+	return ret;
 }
 
 static /*const */ struct file_operations au1550_mixer_fops = {
-	owner:THIS_MODULE,
-	llseek:au1550_llseek,
-	ioctl:au1550_ioctl_mixdev,
-	open:au1550_open_mixdev,
-	release:au1550_release_mixdev,
+	.owner		= THIS_MODULE,
+	.llseek		= au1550_llseek,
+	.unlocked_ioctl	= au1550_ioctl_mixdev,
+	.open		= au1550_open_mixdev,
+	.release	= au1550_release_mixdev,
 };
 
 static int
@@ -1343,8 +1341,7 @@ dma_count_done(struct dmabuf *db)
 
 
 static int
-au1550_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-							unsigned long arg)
+au1550_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	struct au1550_state *s = (struct au1550_state *)file->private_data;
 	unsigned long   flags;
@@ -1780,6 +1777,17 @@ au1550_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 	return mixdev_ioctl(s->codec, cmd, arg);
 }
 
+static long
+au1550_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int ret;
+
+	lock_kernel();
+	ret = au1550_ioctl(file, cmd, arg);
+	unlock_kernel();
+
+	return ret;
+}
 
 static int
 au1550_open(struct inode *inode, struct file *file)
@@ -1797,21 +1805,22 @@ au1550_open(struct inode *inode, struct file *file)
 #endif
 
 	file->private_data = s;
+	lock_kernel();
 	/* wait for device to become free */
 	mutex_lock(&s->open_mutex);
 	while (s->open_mode & file->f_mode) {
-		if (file->f_flags & O_NONBLOCK) {
-			mutex_unlock(&s->open_mutex);
-			return -EBUSY;
-		}
+		ret = -EBUSY;
+		if (file->f_flags & O_NONBLOCK)
+			goto out;
 		add_wait_queue(&s->open_wait, &wait);
 		__set_current_state(TASK_INTERRUPTIBLE);
 		mutex_unlock(&s->open_mutex);
 		schedule();
 		remove_wait_queue(&s->open_wait, &wait);
 		set_current_state(TASK_RUNNING);
+		ret = -ERESTARTSYS;
 		if (signal_pending(current))
-			return -ERESTARTSYS;
+			goto out2;
 		mutex_lock(&s->open_mutex);
 	}
 
@@ -1840,17 +1849,21 @@ au1550_open(struct inode *inode, struct file *file)
 
 	if (file->f_mode & FMODE_READ) {
 		if ((ret = prog_dmabuf_adc(s)))
-			return ret;
+			goto out;
 	}
 	if (file->f_mode & FMODE_WRITE) {
 		if ((ret = prog_dmabuf_dac(s)))
-			return ret;
+			goto out;
 	}
 
 	s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-	mutex_unlock(&s->open_mutex);
 	mutex_init(&s->sem);
-	return 0;
+	ret = 0;
+out:
+	mutex_unlock(&s->open_mutex);
+out2:
+	unlock_kernel();
+	return ret;
 }
 
 static int
@@ -1885,15 +1898,15 @@ au1550_release(struct inode *inode, struct file *file)
 }
 
 static /*const */ struct file_operations au1550_audio_fops = {
-	owner:		THIS_MODULE,
-	llseek:		au1550_llseek,
-	read:		au1550_read,
-	write:		au1550_write,
-	poll:		au1550_poll,
-	ioctl:		au1550_ioctl,
-	mmap:		au1550_mmap,
-	open:		au1550_open,
-	release:	au1550_release,
+	.owner		= THIS_MODULE,
+	.llseek		= au1550_llseek,
+	.read		= au1550_read,
+	.write		= au1550_write,
+	.poll		= au1550_poll,
+	.unlocked_ioctl	= au1550_unlocked_ioctl,
+	.mmap		= au1550_mmap,
+	.open		= au1550_open,
+	.release	= au1550_release,
 };
 
 MODULE_AUTHOR("Advanced Micro Devices (AMD), dan@embeddededge.com");