usb: dwc3: use proper function for setting endpoint name

It's wrong to use the size of array as an argument for strncat.
Memory corruption is possible. strlcat is exactly what we need here.

Cc: stable@vger.kernel.org
Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 48b2d0d..60b75c3 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -643,16 +643,16 @@ static int dwc3_gadget_ep_enable(struct usb_ep *ep,
 
        switch (usb_endpoint_type(desc)) {
        case USB_ENDPOINT_XFER_CONTROL:
-               strncat(dep->name, "-control", sizeof(dep->name));
+               strlcat(dep->name, "-control", sizeof(dep->name));
                break;
        case USB_ENDPOINT_XFER_ISOC:
-               strncat(dep->name, "-isoc", sizeof(dep->name));
+               strlcat(dep->name, "-isoc", sizeof(dep->name));
                break;
        case USB_ENDPOINT_XFER_BULK:
-               strncat(dep->name, "-bulk", sizeof(dep->name));
+               strlcat(dep->name, "-bulk", sizeof(dep->name));
                break;
        case USB_ENDPOINT_XFER_INT:
-               strncat(dep->name, "-int", sizeof(dep->name));
+               strlcat(dep->name, "-int", sizeof(dep->name));
                break;
        default:
                dev_err(dwc->dev, "invalid endpoint transfer type\n");