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greybus: es2: Reserve CPorts 16 and 17
CPorts 16 and 17 are reserved for CDSI0 and CDSI1 by the ES2 APB, make sure they won't be allocated dynamically. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Johan Hovold <johan@hovoldconsulting.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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1 changed files with 9 additions and 0 deletions
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@ -841,6 +841,7 @@ static int ap_probe(struct usb_interface *interface,
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int retval = -ENOMEM;
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int i;
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int num_cports;
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int cport_id;
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udev = usb_get_dev(interface_to_usbdev(interface));
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@ -859,6 +860,14 @@ static int ap_probe(struct usb_interface *interface,
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return PTR_ERR(hd);
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}
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/*
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* CPorts 16 and 17 are reserved for CDSI0 and CDSI1, make sure they
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* won't be allocated dynamically.
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*/
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do {
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cport_id = ida_simple_get(&hd->cport_id_map, 16, 18, GFP_KERNEL);
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} while (cport_id > 0);
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es2 = hd_to_es2(hd);
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es2->hd = hd;
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es2->usb_intf = interface;
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