greybus: es2: update the bulk_ep_set value accepted by map_to_cpor_ep()

The endpoint set 0 is currently considered as invalid.
But 0 mean muxed cports on ep1 and ep2,
then it must not return -EINVAL.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index d6bd210..96090aa 100644 (file)
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -149,7 +149,7 @@ int map_cport_to_ep(struct es1_ap_dev *es1,
        int retval;
        struct cport_to_ep *cport_to_ep;
 
-       if (bulk_ep_set == 0 || bulk_ep_set >= NUM_BULKS)
+       if (bulk_ep_set < 0 || bulk_ep_set >= NUM_BULKS)
                return -EINVAL;
        if (cport_id >= es1->hd->num_cports)
                return -EINVAL;