From 62f0379c6c9b169b99a89c4677a32e45d7778bc4 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Tue, 14 Jul 2020 16:22:59 +0200 Subject: [PATCH] s390/qeth: don't clear the configured isolation mode When qeth_set_access_ctrl_online() is called during the device's initialization and discovers that isolation mode isn't supported, don't clear the user's currently configured mode. They intentionally choose to operate the device in this specific mode, and degrading the isolation is not an option. Only adjust the configuration when called via sysfs (ie. fallback = 1), and here follow the common pattern and restore it from prev_isolation. Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core_main.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 514795c..782a512 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4663,19 +4663,19 @@ int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) QETH_CARD_TEXT(card, 4, "setactlo"); - if (qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { - rc = qeth_setadpparms_set_access_ctrl(card, - card->options.isolation, fallback); - if (rc) { - QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", - rc, CARD_DEVID(card)); - rc = -EOPNOTSUPP; - } - } else if (card->options.isolation != ISOLATION_MODE_NONE) { - card->options.isolation = ISOLATION_MODE_NONE; - + if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { dev_err(&card->gdev->dev, "Adapter does not " "support QDIO data connection isolation\n"); + if (fallback) + card->options.isolation = card->options.prev_isolation; + return -EOPNOTSUPP; + } + + rc = qeth_setadpparms_set_access_ctrl(card, card->options.isolation, + fallback); + if (rc) { + QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", + rc, CARD_DEVID(card)); rc = -EOPNOTSUPP; } return rc; -- 2.7.4