diff -urN linux-2.5.5/sound/core/info.c linux/sound/core/info.c
--- linux-2.5.5/sound/core/info.c	Tue Feb 19 21:11:01 2002
+++ linux/sound/core/info.c	Tue Feb 19 21:50:18 2002
@@ -29,6 +29,7 @@
 #include <sound/info.h>
 #include <sound/version.h>
 #include <linux/proc_fs.h>
+#include <linux/smp_lock.h>
 #ifdef CONFIG_DEVFS_FS
 #include <linux/devfs_fs_kernel.h>
 #endif
@@ -162,31 +163,40 @@
 {
 	snd_info_private_data_t *data;
 	struct snd_info_entry *entry;
+	int ret = -EINVAL;
 
 	data = snd_magic_cast(snd_info_private_data_t, file->private_data, return -ENXIO);
 	entry = data->entry;
+	lock_kernel();
 	switch (entry->content) {
 	case SNDRV_INFO_CONTENT_TEXT:
 		switch (orig) {
 		case 0:	/* SEEK_SET */
 			file->f_pos = offset;
-			return file->f_pos;
+			ret = file->f_pos;
+			goto out;
 		case 1:	/* SEEK_CUR */
 			file->f_pos += offset;
-			return file->f_pos;
+			ret = file->f_pos;
+			goto out;
 		case 2:	/* SEEK_END */
 		default:
-			return -EINVAL;
+			goto out;
 		}
 		break;
 	case SNDRV_INFO_CONTENT_DATA:
-		if (entry->c.ops->llseek)
-			return entry->c.ops->llseek(entry,
+		if (entry->c.ops->llseek) {
+			ret = entry->c.ops->llseek(entry,
 						    data->file_private_data,
 						    file, offset, orig);
+			goto out;
+		}
 		break;
 	}
-	return -ENXIO;
+	ret = -ENXIO;
+out:
+	unlock_kernel();
+	return ret;
 }
 
 static ssize_t snd_info_entry_read(struct file *file, char *buffer,
diff -urN linux-2.5.5/Documentation/filesystems/porting linux/Documentation/filesystems/porting
--- linux-2.5.5/Documentation/filesystems/porting	Tue Feb 19 21:10:58 2002
+++ linux/Documentation/filesystems/porting	Tue Feb 19 21:53:01 2002
@@ -81,11 +81,12 @@
 [mandatory]
 
 ->lookup(), ->truncate(), ->create(), ->unlink(), ->mknod(), ->mkdir(),
-->rmdir(), ->link(), ->symlink() and ->rename() are called without BKL now.
-Grab it on the entry, drop upon return - that will guarantee the same
-locking you used to have.  If your method or its parts do not need BKL -
-better yet, now you can shift lock_kernel() / unlock_kernel() so that
-they would protect exactly what needs to be protected.
+->rmdir(), ->link(), ->lseek(), ->symlink() and ->rename() are called
+without BKL now.  Grab it on the entry, drop upon return - that will
+guarantee the same locking you used to have.  If your method or its
+parts do not need BKL - better yet, now you can shift lock_kernel() and
+unlock_kernel() so that they would protect exactly what needs to be
+protected.
 
 ---
 [informational]