[PATCH v6 5/6] usb: chipidea: udc: don't truncate requests to single tds

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



It is not safe to truncate requests to the maximum possible size the
controller can handle with one td and to keep working. That patch fixes
that with proper error handling instead.

Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
 drivers/usb/chipidea/udc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index d4db3ac..e7c84ab 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1207,9 +1207,9 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
 	}
 
 	if (req->length > 4 * CI13XXX_PAGE_SIZE) {
-		req->length = 4 * CI13XXX_PAGE_SIZE;
 		retval = -EMSGSIZE;
-		dev_warn(mEp->ci->dev, "request length truncated\n");
+		dev_err(mEp->ci->dev, "request bigger than one td\n");
+		goto done;
 	}
 
 	dbg_queue(_usb_addr(mEp), req, retval);
-- 
1.8.2.rc2

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux