snd_info_entry_read/write cleanup

diff -u -r1.39 info.c
@@ -180,7 +180,7 @@
 	snd_info_private_data_t *data;
 	struct snd_info_entry *entry;
 	snd_info_buffer_t *buf;
-	long size = 0, size1;
+	long size = 0;
 
 	data = snd_magic_cast(snd_info_private_data_t, file->private_data, return -ENXIO);
 	snd_assert(data != NULL, return -ENXIO);

@@ -192,10 +192,7 @@
 			return -EIO;
 		if (file->f_pos >= (long)buf->size)
 			return 0;
-		size = buf->size < count ? buf->size : count;
-		size1 = buf->size - file->f_pos;
-		if (size1 < size)
-			size = size1;
+		size = min(count, buf->size - file->f_pos);
 		if (copy_to_user(buffer, buf->buffer + file->f_pos, size))
 			return -EFAULT;
 		file->f_pos += size;

@@ -205,8 +202,6 @@
 			return entry->c.ops->read(entry,
 						  data->file_private_data,
 						  file, buffer, count);
-		if (size > 0)
-			file->f_pos += size;
 		break;
 	}
 	return size;

@@ -218,7 +213,7 @@
 	snd_info_private_data_t *data;
 	struct snd_info_entry *entry;
 	snd_info_buffer_t *buf;
-	long size = 0, size1;
+	long size = 0;
 
 	data = snd_magic_cast(snd_info_private_data_t, file->private_data, return -ENXIO);
 	snd_assert(data != NULL, return -ENXIO);

@@ -232,10 +227,7 @@
 			return -EINVAL;
 		if (file->f_pos >= (long)buf->len)
 			return -ENOMEM;
-		size = buf->len < count ? buf->len : count;
-		size1 = buf->len - file->f_pos;
-		if (size1 < size)
-			size = size1;
+		size = min(count, buf->len - file->f_pos);
 		if (copy_from_user(buf->buffer + file->f_pos, buffer, size))
 			return -EFAULT;
 		if ((long)buf->size < file->f_pos + size)

@@ -247,8 +239,6 @@
 			return entry->c.ops->write(entry,
 						   data->file_private_data,
 						   file, buffer, count);
-		if (size > 0)
-			file->f_pos += size;
 		break;
 	}
 	return size;