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usb: renesas_usbhs: return error if wrong recip request

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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>
This commit is contained in:
Kuninori Morimoto
2011-04-21 14:10:12 +09:00
committed by Greg Kroah-Hartman
parent cb96632c18
commit 9a28b7bd4f
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/renesas_usbhs/mod_gadget.c
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@@ -583,6 +583,10 @@ static int usbhsg_recip_run_handle(struct usbhs_priv *priv,
char *msg; char *msg;
uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); 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) { switch (recip) {
case USB_RECIP_DEVICE: case USB_RECIP_DEVICE: