media: iguanair: fix endpoint sanity check
commit5.4-rM2-2.2.x-imx-squashed1b257870a7
upstream. Make sure to use the current alternate setting, which need not be the first one by index, when verifying the endpoint descriptors and initialising the URBs. Failing to do so could cause the driver to misbehave or trigger a WARN() in usb_submit_urb() that kernels with panic_on_warn set would choke on. Fixes:26ff63137c
("[media] Add support for the IguanaWorks USB IR Transceiver") Fixes:ab1cbdf159
("media: iguanair: add sanity checks") Cc: stable <stable@vger.kernel.org> # 3.6 Cc: Oliver Neukum <oneukum@suse.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ae116f21b2
commit
fd52d88c1d
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@ -413,7 +413,7 @@ static int iguanair_probe(struct usb_interface *intf,
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int ret, pipein, pipeout;
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struct usb_host_interface *idesc;
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idesc = intf->altsetting;
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idesc = intf->cur_altsetting;
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if (idesc->desc.bNumEndpoints < 2)
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return -ENODEV;
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