From mboxrd@z Thu Jan 1 00:00:00 1970 From: frank.blaschka@de.ibm.com Subject: [patch 1/2] [PATCH] qeth: Fix IPA_CMD_QIPASSIST return code handling Date: Tue, 13 Nov 2012 10:05:16 +0100 Message-ID: <20121113090529.950069848@de.ibm.com> References: <20121113090515.223638702@de.ibm.com> Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, Stefan Raspl To: davem@davemloft.net Return-path: Received: from e06smtp14.uk.ibm.com ([195.75.94.110]:52983 "EHLO e06smtp14.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753670Ab2KMJFg (ORCPT ); Tue, 13 Nov 2012 04:05:36 -0500 Received: from /spool/local by e06smtp14.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 13 Nov 2012 09:05:34 -0000 Content-Disposition: inline; filename=600-qeth-ip-qipassist-rc.diff Sender: netdev-owner@vger.kernel.org List-ID: From: Stefan Raspl Return codes of IPA_CMD_QIPASSIST are not checked, especially the ones which indicate that the command is not supported. As a result, the device driver would not enable all available features on older card generations. This patch adds proper checking and sets the bare minimum in the supported functions flags to avoid follow-on errors. Signed-off-by: Stefan Raspl Signed-off-by: Frank Blaschka Reviewed-by: Ursula Braun --- drivers/s390/net/qeth_core_main.c | 24 ++++++++++++++++++++++-- drivers/s390/net/qeth_l2_main.c | 11 +++++++---- 2 files changed, 29 insertions(+), 6 deletions(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 3e25d31..4d6ba00 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -2942,13 +2942,33 @@ static int qeth_query_ipassists_cb(struct qeth_card *card, QETH_DBF_TEXT(SETUP, 2, "qipasscb"); cmd = (struct qeth_ipa_cmd *) data; + + switch (cmd->hdr.return_code) { + case IPA_RC_NOTSUPP: + case IPA_RC_L2_UNSUPPORTED_CMD: + QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); + card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; + card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; + return -0; + default: + if (cmd->hdr.return_code) { + QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled " + "rc=%d\n", + dev_name(&card->gdev->dev), + cmd->hdr.return_code); + return 0; + } + } + if (cmd->hdr.prot_version == QETH_PROT_IPV4) { card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; - } else { + } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) { card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; - } + } else + QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected" + "\n", dev_name(&card->gdev->dev)); QETH_DBF_TEXT(SETUP, 2, "suppenbl"); QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported); QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index e67e025..84e8f1d 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -626,10 +626,13 @@ static int qeth_l2_request_initial_mac(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "doL2init"); QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); - rc = qeth_query_setadapterparms(card); - if (rc) { - QETH_DBF_MESSAGE(2, "could not query adapter parameters on " - "device %s: x%x\n", CARD_BUS_ID(card), rc); + if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { + rc = qeth_query_setadapterparms(card); + if (rc) { + QETH_DBF_MESSAGE(2, "could not query adapter " + "parameters on device %s: x%x\n", + CARD_BUS_ID(card), rc); + } } if (card->info.type == QETH_CARD_TYPE_IQD ||