[PATCH net 4/6] s390/qeth: Fix vnicc_is_in_use if rx_bcast not set

[Julian Wiedmann <jwi@linux.ibm.com>]

From: Alexandra Winter <wintera@linux.ibm.com>

Symptom: After vnicc/rx_bcast has been manually set to 0,
	bridge_* sysfs parameters can still be set or written.
Only occurs on HiperSockets, as OSA doesn't support changing rx_bcast.

Vnic characteristics and bridgeport settings are mutually exclusive.
rx_bcast defaults to 1, so manually setting it to 0 should disable
bridge_* parameters.

Instead it makes sense here to check the supported mask. If the card
does not support vnicc at all, bridge commands are always allowed.

Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
 drivers/s390/net/qeth_l2_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index fc5d8ed3a737..8024a2112a87 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1952,8 +1952,7 @@ int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
 /* check if VNICC is currently enabled */
 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
 {
-	/* if everything is turned off, VNICC is not active */
-	if (!card->options.vnicc.cur_chars)
+	if (!card->options.vnicc.sup_chars)
 		return false;
 	/* default values are only OK if rx_bcast was not enabled by user
 	 * or the card is offline.
-- 
2.17.1