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s390/qeth: Remove pnso workaround 

Remove workaround that supported early hardware implementations
of PNSO OC3. Rely on the 'enarf' feature bit instead.

Fixes: fa115adff2 ("s390/qeth: Detect PNSO OC3 capability")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
[jwi: use logical instead of bit-wise AND]
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alexandra Winter 2020-11-20 10:09:36 +01:00 committed by Jakub Kicinski
parent e10823c719
commit 0d0e2b538c
1 changed files with 2 additions and 16 deletions
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18
drivers/s390/net/qeth_l2_main.c
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@ -985,32 +985,19 @@ static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
* change notification' and thus can support the learning_sync bridgeport
* attribute
* @card: qeth_card structure pointer
*
* This is a destructive test and must be called before dev2br or
* bridgeport address notification is enabled!
*/
static void qeth_l2_detect_dev2br_support(struct qeth_card *card)
{
struct qeth_priv *priv = netdev_priv(card->dev);
bool dev2br_supported;
int rc;
QETH_CARD_TEXT(card, 2, "d2brsup");
if (!IS_IQD(card))
return;
/* dev2br requires valid cssid,iid,chid */
if (!card->info.ids_valid) {
dev2br_supported = false;
} else if (css_general_characteristics.enarf) {
dev2br_supported = true;
} else {
/* Old machines don't have the feature bit:
* Probe by testing whether a disable succeeds
*/
rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL);
dev2br_supported = !rc;
}
dev2br_supported = card->info.ids_valid &&
css_general_characteristics.enarf;
QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported);
if (dev2br_supported)
@ -2233,7 +2220,6 @@ static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok)
struct net_device *dev = card->dev;
int rc = 0;
/* query before bridgeport_notification may be enabled */
qeth_l2_detect_dev2br_support(card);
mutex_lock(&card->sbp_lock);