usb: renesas_usbhs: return error if wrong recip request

There are some USB Host which doesn't notice disconnection at once.
And it might try some request after reconnection with old settings.
Current renesas_usbhs will crash in such case.
This patch prevent this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index d027c80..206cfab 100644 (file)
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -583,6 +583,10 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
        char *msg;
 
        uep = usbhsg_gpriv_to_nth_uep(gpriv, nth);
+       if (!usbhsg_uep_to_pipe(uep)) {
+               dev_err(dev, "wrong recip request\n");
+               return -EINVAL;
+       }
 
        switch (recip) {
        case USB_RECIP_DEVICE: