USB: serial: visor: fix crash on detecting device without write_urbs
The visor driver crashes in clie_5_attach() when a specially crafted USB
device without bulk-out endpoint is detected. This fix adds a check that
the device has proper configuration expected by the driver.
Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Fixes: cfb8da8f69
("USB: visor: fix initialisation of UX50/TH55 devices")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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@ -602,8 +602,10 @@ static int clie_5_attach(struct usb_serial *serial)
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*/
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/* some sanity check */
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if (serial->num_ports < 2)
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return -1;
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if (serial->num_bulk_out < 2) {
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dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
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return -ENODEV;
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}
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/* port 0 now uses the modified endpoint Address */
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port = serial->port[0];
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