[PATCH 05/35] USB: Stall control endpoint when file storage class request wValue != 0

From: Luis Lloret <[email protected]>

This patch makes the File Storage Gadget stall the control endpoint
when a MSC class request is made with wValue != 0.  This change makes
some MSC compliance test warnings disappear.

Signed-off-by: Luis Lloret <[email protected]>
Signed-off-by: Alan Stern <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/usb/gadget/file_storage.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index be7a1bd..01ddb6d 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -1295,6 +1295,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 	struct usb_request	*req = fsg->ep0req;
 	int			value = -EOPNOTSUPP;
 	u16			w_index = le16_to_cpu(ctrl->wIndex);
+	u16                     w_value = le16_to_cpu(ctrl->wValue);
 	u16			w_length = le16_to_cpu(ctrl->wLength);
 
 	if (!fsg->config)
@@ -1308,7 +1309,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 			if (ctrl->bRequestType != (USB_DIR_OUT |
 					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 				break;
-			if (w_index != 0) {
+			if (w_index != 0 || w_value != 0) {
 				value = -EDOM;
 				break;
 			}
@@ -1324,7 +1325,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 			if (ctrl->bRequestType != (USB_DIR_IN |
 					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 				break;
-			if (w_index != 0) {
+			if (w_index != 0 || w_value != 0) {
 				value = -EDOM;
 				break;
 			}
@@ -1343,7 +1344,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 			if (ctrl->bRequestType != (USB_DIR_OUT |
 					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 				break;
-			if (w_index != 0) {
+			if (w_index != 0 || w_value != 0) {
 				value = -EDOM;
 				break;
 			}
-- 
1.5.3.rc5


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