[PATCH] USB: legousbtower: use stream_open for stream semantics

[PATCH] USB: legousbtower: use stream_open for stream semantics

[mdshahid03]

From: Mohammad Shahid <mdshahid03@gmail.com>

The LEGO USB Tower driver uses nonseekable_open() in tower_open()
However, its read and write have stream semantics.

Use stream_open instead to mark the file as a stream and disable
unnecessary file position handling.

The issue is reported by stream_open.cocci script as potential
deadlock between read and write operation.

Signed-off-by: Mohammad Shahid <mdshahid03@gmail.com>
---
 drivers/usb/misc/legousbtower.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index 18dd4115befb..b849bd0e9664 100644
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -313,7 +313,7 @@ static int tower_open(struct inode *inode, struct file *file)
 	struct tower_reset_reply reset_reply;
 	int result;
 
-	nonseekable_open(inode, file);
+	stream_open(inode, file);
 	subminor = iminor(inode);
 
 	interface = usb_find_interface(&tower_driver, subminor);
-- 
2.43.0