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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3BC6DC4167B for ; Mon, 12 Dec 2022 13:34:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232673AbiLLNeW (ORCPT ); Mon, 12 Dec 2022 08:34:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232700AbiLLNd4 (ORCPT ); Mon, 12 Dec 2022 08:33:56 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCF8513F05 for ; Mon, 12 Dec 2022 05:33:45 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 464CECE0EFC for ; Mon, 12 Dec 2022 13:33:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02585C433F0; Mon, 12 Dec 2022 13:33:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670852022; bh=1HQ9ZLnMqnp4xTD6CGj73RRp6K5dENcRFanIan9uKAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qerbVBJyKK8s/PdAgPBCIC28KpM1ObZzHPSzEfwXWqD+p7wV6oOXjIWdpq9B8jowP xYY10pD4AgfD/v63gu3ekV0JN2rla78brszYGgvZ07nC8d9UjuHkda3ioT5mtzmPZt QvrrTNsY3ll2hJnse/j8vX0mRRPc33onWIav02c8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sylwester Dziedziuch , Jan Sokolowski , Konrad Jankowski , Tony Nguyen , Sasha Levin Subject: [PATCH 5.15 092/123] i40e: Fix for VF MAC address 0 Date: Mon, 12 Dec 2022 14:17:38 +0100 Message-Id: <20221212130930.914877662@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221212130926.811961601@linuxfoundation.org> References: <20221212130926.811961601@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sylwester Dziedziuch [ Upstream commit 08501970472077ed5de346ad89943a37d1692e9b ] After spawning max VFs on a PF, some VFs were not getting resources and their MAC addresses were 0. This was caused by PF sleeping before flushing HW registers which caused VIRTCHNL_VFR_VFACTIVE to not be set in time for VF. Fix by adding a sleep after hw flush. Fixes: e4b433f4a741 ("i40e: reset all VFs in parallel when rebuilding PF") Signed-off-by: Sylwester Dziedziuch Signed-off-by: Jan Sokolowski Tested-by: Konrad Jankowski Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 8f350792e823..7aedf20a1021 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1578,6 +1578,7 @@ bool i40e_reset_vf(struct i40e_vf *vf, bool flr) i40e_cleanup_reset_vf(vf); i40e_flush(hw); + usleep_range(20000, 40000); clear_bit(I40E_VF_STATE_RESETTING, &vf->vf_states); return true; @@ -1701,6 +1702,7 @@ bool i40e_reset_all_vfs(struct i40e_pf *pf, bool flr) } i40e_flush(hw); + usleep_range(20000, 40000); clear_bit(__I40E_VF_DISABLE, pf->state); return true; -- 2.35.1