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=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 98B3CC4708A for ; Thu, 27 May 2021 11:34:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C86F60FF3 for ; Thu, 27 May 2021 11:34:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233521AbhE0LgE (ORCPT ); Thu, 27 May 2021 07:36:04 -0400 Received: from mga17.intel.com ([192.55.52.151]:38172 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229657AbhE0LgA (ORCPT ); Thu, 27 May 2021 07:36:00 -0400 IronPort-SDR: GHpEVKI4qrm3F2IJZhYFAqoVokjuHAyzeLTaWn9LbvVaUwroPLe1xqAlqmhRG/tuLlO1lvaxmr 5LSjRq1nTnJw== X-IronPort-AV: E=McAfee;i="6200,9189,9996"; a="183046787" X-IronPort-AV: E=Sophos;i="5.82,334,1613462400"; d="scan'208";a="183046787" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 May 2021 04:34:26 -0700 IronPort-SDR: Z8d4c4OA1I9bZBvmBtBnyIfwcZYYCgoULFtKxAPKxYU2kGCJL42VPweB5L2c/xuMN88+cvOaR3 AQhLu02AG3hw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,334,1613462400"; d="scan'208";a="443526298" Received: from mattu-haswell.fi.intel.com (HELO [10.237.72.170]) ([10.237.72.170]) by orsmga008.jf.intel.com with ESMTP; 27 May 2021 04:34:24 -0700 Subject: Re: [PATCH 21/24] usb: host: xhci: Move array of structs from the stack onto the heap To: Lee Jones , Sergei Shtylyov Cc: linux-kernel@vger.kernel.org, Mathias Nyman , Greg Kroah-Hartman , linux-usb@vger.kernel.org References: <20210526130037.856068-1-lee.jones@linaro.org> <20210526130037.856068-22-lee.jones@linaro.org> <8551978f-27b0-767e-f92b-e96ab3064b33@gmail.com> <20210526144451.GB543307@dell> <20210526152835.GE543307@dell> From: Mathias Nyman Autocrypt: addr=mathias.nyman@linux.intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210526152835.GE543307@dell> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26.5.2021 18.28, Lee Jones wrote: > On Wed, 26 May 2021, Sergei Shtylyov wrote: > >> On 5/26/21 5:44 PM, Lee Jones wrote: >> >> [...] >>>>> Fixes the following W=1 kernel build warning(s): >>>>> >>>>> drivers/usb/host/xhci.c: In function ‘xhci_reserve_bandwidth’: >>>>> drivers/usb/host/xhci.c:2859:1: warning: the frame size of 1032 bytes is larger than 1024 bytes [-Wframe-larger-than=] >>>>> >>>>> Cc: Mathias Nyman >>>>> Cc: Greg Kroah-Hartman >>>>> Cc: linux-usb@vger.kernel.org >>>>> Signed-off-by: Lee Jones >>>>> --- >>>>> drivers/usb/host/xhci.c | 8 +++++++- >>>>> 1 file changed, 7 insertions(+), 1 deletion(-) >>>>> >>>>> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c >>>>> index ac2a7d4288883..40ce4b4eb12ad 100644 >>>>> --- a/drivers/usb/host/xhci.c >>>>> +++ b/drivers/usb/host/xhci.c >>>> [...] >>>>> @@ -2788,6 +2788,10 @@ static int xhci_reserve_bandwidth(struct xhci_hcd *xhci, >>>>> return -ENOMEM; >>>>> } >>>>> >>>>> + ep_bw_info = kzalloc(sizeof(*ep_bw_info) * 31, GFP_KERNEL); GFP_KERNEL might not be suitable for all cases. xhci_reserve_bandwidth() is called from xhci_configure_endpoint(), which again is called from a lot of places. For example from xhci_update_hub_device() which can be called with GFP_NOIO mem_flags. -Mathias