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Input: xpad - validate USB endpoint type during probe

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We should only see devices with interrupt endpoints. Ignore any other
endpoints that we find, so we don't send try to send them interrupt URBs
and trigger a WARN down in the USB stack.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Cc: <stable@vger.kernel.org> # c01b5e7464f0 Input: xpad - don't depend on endpoint order
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Cameron Gutman 2017-09-12 11:27:44 -07:00 committed by Dmitry Torokhov
parent 39467fc105
commit 122d6a3473
1 changed files with 6 additions and 4 deletions
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10
drivers/input/joystick/xpad.c
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@ -1750,10 +1750,12 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
struct usb_endpoint_descriptor *ep =
&intf->cur_altsetting->endpoint[i].desc;
if (usb_endpoint_dir_in(ep))
ep_irq_in = ep;
else
ep_irq_out = ep;
if (usb_endpoint_xfer_int(ep)) {
if (usb_endpoint_dir_in(ep))
ep_irq_in = ep;
else
ep_irq_out = ep;
}
}
if (!ep_irq_in || !ep_irq_out) {