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Commit a75fd8ba authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Greg Kroah-Hartman
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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: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 5626e0bf

drivers/staging/greybus/es2.c

+9 −0
Original line number Diff line number Diff line
@@ -841,6 +841,7 @@ static int ap_probe(struct usb_interface *interface, 
	int retval = -ENOMEM;

	int i;

	int num_cports;

	int cport_id;



	udev = usb_get_dev(interface_to_usbdev(interface));
@@ -859,6 +860,14 @@ static int ap_probe(struct usb_interface *interface, 
		return PTR_ERR(hd);

	}



	/*

	 * CPorts 16 and 17 are reserved for CDSI0 and CDSI1, make sure they

	 * won't be allocated dynamically.

	 */

	do {

		cport_id = ida_simple_get(&hd->cport_id_map, 16, 18, GFP_KERNEL);

	} while (cport_id > 0);



	es2 = hd_to_es2(hd);

	es2->hd = hd;

	es2->usb_intf = interface;