From ce7b6121851c72d661134d113a78161095e0ae73 Mon Sep 17 00:00:00 2001 From: Paul Zimmerman Date: Wed, 26 Oct 2011 12:07:54 -0700 Subject: [PATCH] usb: gadget: storage: check for valid USB_BULK_RESET_REQUEST wLength The USB-IF CV compliance tester is getting stricter, and it would be valid for it to fail a mass-storage device that accepts an invalid USB_BULK_RESET_REQUEST request. Although it doesn't do that yet, let's be proactive and fix that now. Suggested by Alan Stern. Signed-off-by: Paul Zimmerman Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_mass_storage.c | 3 ++- drivers/usb/gadget/file_storage.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index dfd0044cc15..c39d58860fa 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -624,7 +624,8 @@ static int fsg_setup(struct usb_function *f, if (ctrl->bRequestType != (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE)) break; - if (w_index != fsg->interface_number || w_value != 0) + if (w_index != fsg->interface_number || w_value != 0 || + w_length != 0) return -EDOM; /* diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 4314cf20142..11b5196284a 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -859,7 +859,7 @@ 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 || w_value != 0) { + if (w_index != 0 || w_value != 0 || w_length != 0) { value = -EDOM; break; } -- 2.39.2