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 22274CD13CF for ; Sun, 17 Sep 2023 20:20:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240835AbjIQUUR (ORCPT ); Sun, 17 Sep 2023 16:20:17 -0400 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 S240757AbjIQUTr (ORCPT ); Sun, 17 Sep 2023 16:19:47 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67F09101 for ; Sun, 17 Sep 2023 13:19:42 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D716C433C8; Sun, 17 Sep 2023 20:19:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694981982; bh=eyUaPxDvoBiSihAEMziXLBnWMtiD1hYaMGJpwl7jGIs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=inPiWdk97AmhAKU7xVsw2dbRsr1wBulB50WZeU+WgbvR3QMc0wyig6rnaHH1sohmq c1V/zAymMsdA0p210s1LY7F3kpd4iMoNnOpAtdGeDXBWWEMIXR24jPJ6Pi0189eose MJfkpRFo9iIYOR1/hbfwKLo6GPU6SldRfwtzQ45s= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hayes Wang , "David S. Miller" , Sasha Levin Subject: [PATCH 6.1 201/219] r8152: check budget for r8152_poll() Date: Sun, 17 Sep 2023 21:15:28 +0200 Message-ID: <20230917191048.205044060@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230917191040.964416434@linuxfoundation.org> References: <20230917191040.964416434@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hayes Wang [ Upstream commit a7b8d60b37237680009dd0b025fe8c067aba0ee3 ] According to the document of napi, there is no rx process when the budget is 0. Therefore, r8152_poll() has to return 0 directly when the budget is equal to 0. Fixes: d2187f8e4454 ("r8152: divide the tx and rx bottom functions") Signed-off-by: Hayes Wang Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/usb/r8152.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 059d610901d84..fc1458f96e170 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -2628,6 +2628,9 @@ static int r8152_poll(struct napi_struct *napi, int budget) struct r8152 *tp = container_of(napi, struct r8152, napi); int work_done; + if (!budget) + return 0; + work_done = rx_bottom(tp, budget); if (work_done < budget) { -- 2.40.1