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GET /api/patches/529893/?format=api
{ "id": 529893, "url": "http://patchwork.ozlabs.org/api/patches/529893/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1444729698-9441-1-git-send-email-leonid@daynix.com/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1444729698-9441-1-git-send-email-leonid@daynix.com>", "list_archive_url": null, "date": "2015-10-13T09:48:18", "name": "e1000e: fix division by zero on jumbo MTUs", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "6baa9310fee221bc1254823019d9420cd43b1767", "submitter": { "id": 66952, "url": "http://patchwork.ozlabs.org/api/people/66952/?format=api", "name": "Leonid Bloch", "email": "leonid@daynix.com" }, "delegate": { "id": 68, "url": "http://patchwork.ozlabs.org/api/users/68/?format=api", "username": "jtkirshe", "first_name": "Jeff", "last_name": "Kirsher", "email": "jeffrey.t.kirsher@intel.com" }, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1444729698-9441-1-git-send-email-leonid@daynix.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/529893/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/529893/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@lists.osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Received": [ "from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138])\n\tby ozlabs.org (Postfix) with ESMTP id 3FBB5140E3F\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 14 Oct 2015 05:53:51 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id 17DF588479;\n\tTue, 13 Oct 2015 18:53:51 +0000 (UTC)", "from whitealder.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id HwyC5qszC2YG; Tue, 13 Oct 2015 18:53:49 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby whitealder.osuosl.org (Postfix) with ESMTP id 2CC9E87DA3;\n\tTue, 13 Oct 2015 18:53:49 +0000 (UTC)", "from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136])\n\tby ash.osuosl.org (Postfix) with ESMTP id 939411C0CA9\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 13 Oct 2015 09:55:40 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby silver.osuosl.org (Postfix) with ESMTP id 8C47C2F968\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 13 Oct 2015 09:55:40 +0000 (UTC)", "from silver.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id Eveygj5UDIiW for <intel-wired-lan@lists.osuosl.org>;\n\tTue, 13 Oct 2015 09:55:39 +0000 (UTC)", "from mail-wi0-f172.google.com (mail-wi0-f172.google.com\n\t[209.85.212.172])\n\tby silver.osuosl.org (Postfix) with ESMTPS id 8738725D39\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 13 Oct 2015 09:55:39 +0000 (UTC)", "by wieq12 with SMTP id q12so23586377wie.1\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tTue, 13 Oct 2015 02:55:37 -0700 (PDT)", "from bark.daynix ([5.102.236.99]) by smtp.gmail.com with ESMTPSA id\n\tp2sm2575270wjb.21.2015.10.13.02.48.41\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tTue, 13 Oct 2015 02:48:43 -0700 (PDT)" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "delayed 00:06:53 by SQLgrey-1.7.6", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20130820;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id;\n\tbh=75j1Va13UkKXWsz6M/Oi6xDgttTbcBmPKzGHKAfSW5k=;\n\tb=EL5TXRG2TeQAQmYM/opUd73jL/l5ShbD3y7J3A1C8KD7sN8YX+zV7OthIpIzl6E5s5\n\tXNANh348ZbOqosySyR6czHf6MqUkYt/SQMOVr9LcvVKLdrGgg5TFh6OfJ/rDvlqOPaT3\n\tBi7+qP+BYkMQzPRKbQDCKTsxdlprehu47uGI3RdTN0/WvZH/YFW+xg6/CsR3zsrEp1v3\n\tiwHXwAB/ZGYtjZxN3bOLnDwTkH1eGgjGDAv2CKbhAl4jQiHhQ7EVpeDFOUG/Lfdl/ko6\n\tYa/4OcwI10zm75A0dAE3F+zpl+EWDkhOcXUVX3g+MVJMsjE9WZVri9SC/YPL60QNvj1N\n\tmclg==", "X-Gm-Message-State": "ALoCoQlixogDPiGzuv6y/Z0NZR9xFMtcTX6ZmwbGC/ldRnaeQmYBnvrTCh9NCN5o6azXJerQs6p3", "X-Received": "by 10.194.113.33 with SMTP id iv1mr34407885wjb.65.1444729724256; \n\tTue, 13 Oct 2015 02:48:44 -0700 (PDT)", "From": "Leonid Bloch <leonid@daynix.com>", "To": "linux-kernel@vger.kernel.org", "Date": "Tue, 13 Oct 2015 12:48:18 +0300", "Message-Id": "<1444729698-9441-1-git-send-email-leonid@daynix.com>", "X-Mailer": "git-send-email 2.4.3", "X-Mailman-Approved-At": "Tue, 13 Oct 2015 18:53:47 +0000", "Cc": "intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,\n\tDmitry Fleytman <dmitry@daynix.com>", "Subject": "[Intel-wired-lan] [PATCH] e1000e: fix division by zero on jumbo MTUs", "X-BeenThere": "intel-wired-lan@lists.osuosl.org", "X-Mailman-Version": "2.1.18-1", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n\t<intel-wired-lan.lists.osuosl.org>", "List-Unsubscribe": "<http://lists.osuosl.org/mailman/options/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@lists.osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@lists.osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@lists.osuosl.org?subject=help>", "List-Subscribe": "<http://lists.osuosl.org/mailman/listinfo/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@lists.osuosl.org?subject=subscribe>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "intel-wired-lan-bounces@lists.osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@lists.osuosl.org>" }, "content": "From: Dmitry Fleytman <dmitry@daynix.com>\n\nThis patch fixes possible division by zero in receive\ninterrupt handler when working without adaptive interrupt\nmoderation.\n\nThe adaptive interrupt moderation mechanism is typically\ndisabled on jumbo MTUs.\n\nSigned-off-by: Dmitry Fleytman <dmitry@daynix.com>\nSigned-off-by: Leonid Bloch <leonid@daynix.com>\n---\n drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++++--\n 1 file changed, 4 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c\nindex faf4b3f..a60dce1 100644\n--- a/drivers/net/ethernet/intel/e1000e/netdev.c\n+++ b/drivers/net/ethernet/intel/e1000e/netdev.c\n@@ -1959,8 +1959,10 @@ static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data)\n \t * previous interrupt.\n \t */\n \tif (rx_ring->set_itr) {\n-\t\twritel(1000000000 / (rx_ring->itr_val * 256),\n-\t\t rx_ring->itr_register);\n+\t\tu32 itr = rx_ring->itr_val ?\n+\t\t\t1000000000 / (rx_ring->itr_val * 256) : 0;\n+\n+\t\twritel(itr, rx_ring->itr_register);\n \t\trx_ring->set_itr = 0;\n \t}\n \n", "prefixes": [] }