From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F12CC19F38 for ; Mon, 30 Aug 2021 12:03:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2556661168 for ; Mon, 30 Aug 2021 12:03:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237370AbhH3MDp (ORCPT ); Mon, 30 Aug 2021 08:03:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:49476 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236863AbhH3MBa (ORCPT ); Mon, 30 Aug 2021 08:01:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 19D1F61165; Mon, 30 Aug 2021 12:00:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630324834; bh=HBIRkgjNfE00HLI5pXB5VaR9RBqzHURHnstPnQz+qfU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QWTlO5g1Unvy7iNlH5SUDegc3yRf0R6TDZrhNHfnHH2RykJ4VMwj6MTGY7xJfQV+e 8BYN/gfUqaeSgr9KzmtR4Imi5Mk0HNeODF326hV3+DyiyTf56D5rxDBm9cln7FDmKE 9IPoHKhIQ8kEXMYSd9MhedjYjIVSSZ+Y3ARDuOK0CoodnTXQmNEef5Amdx519faMek dK646FbRLiXdrKnm0elgGgtWf1M2CjqU+LWOqv135jbSOAf/TMCs6PM7AJfs5dHlMn yruq/IA1TsrSeWyUcxZJpD96aCOZ4NYb3+yBT/mpeRW+cR40CY8PRUb5fHbzSS2CK7 UvxGnfwS6tk4w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Shai Malin , Prabhakar Kushwaha , Ariel Elior , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 2/8] qed: Fix the VF msix vectors flow Date: Mon, 30 Aug 2021 08:00:25 -0400 Message-Id: <20210830120031.1017977-2-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210830120031.1017977-1-sashal@kernel.org> References: <20210830120031.1017977-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shai Malin [ Upstream commit b0cd08537db8d2fbb227cdb2e5835209db295a24 ] For VFs we should return with an error in case we didn't get the exact number of msix vectors as we requested. Not doing that will lead to a crash when starting queues for this VF. Signed-off-by: Prabhakar Kushwaha Signed-off-by: Ariel Elior Signed-off-by: Shai Malin Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/qlogic/qed/qed_main.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c index 049a83b40e46..9d77f318d11e 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_main.c +++ b/drivers/net/ethernet/qlogic/qed/qed_main.c @@ -439,7 +439,12 @@ static int qed_enable_msix(struct qed_dev *cdev, rc = cnt; } - if (rc > 0) { + /* For VFs, we should return with an error in case we didn't get the + * exact number of msix vectors as we requested. + * Not doing that will lead to a crash when starting queues for + * this VF. + */ + if ((IS_PF(cdev) && rc > 0) || (IS_VF(cdev) && rc == cnt)) { /* MSI-x configuration was achieved */ int_params->out.int_mode = QED_INT_MODE_MSIX; int_params->out.num_vectors = rc; -- 2.30.2