From patchwork Fri Apr 1 08:03:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: CGEL X-Patchwork-Id: 12797981 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 D4A2EC433F5 for ; Fri, 1 Apr 2022 08:03:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344126AbiDAIFg (ORCPT ); Fri, 1 Apr 2022 04:05:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244236AbiDAIFe (ORCPT ); Fri, 1 Apr 2022 04:05:34 -0400 Received: from mail-qv1-xf29.google.com (mail-qv1-xf29.google.com [IPv6:2607:f8b0:4864:20::f29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C346862106; Fri, 1 Apr 2022 01:03:44 -0700 (PDT) Received: by mail-qv1-xf29.google.com with SMTP id kd21so1463086qvb.6; Fri, 01 Apr 2022 01:03:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=iigF8mZf5i0ikBPqRgdRRkmmEgwTtaij4Ng6hfEOlCQ=; b=ftdTOSnXccEyo1dXXR9tTbQVppJSoN5RXjbIIr/EbrENnzHLuN9lJwfUKrxOrHm3O/ QnEXfsZjW+AQ8LPoBsdsiMNqN7FNsNsuyX6s7Ru38zJSlnRqR/L4b9TJ7wjzZdQTYkkC RU5DCf7qm9TPiWkLvjhh1LDCTDQ785zYPc+B1gzilKeBoig2fLqMF61w2qrGyL959ad9 iMX7kz3SF3PEviq5DUSfwpo1+DW8AL4Ps72+YeHaXrcAIVDGTLdvg+tJd587rucjqw/q AAkuPAyIclnPyJIAQpXsi8h3N5KNkm/xybiyxRN51HnZ/FPmaboCZCEFImtW3J1AvDqZ G4lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=iigF8mZf5i0ikBPqRgdRRkmmEgwTtaij4Ng6hfEOlCQ=; b=DJP+gPmjnDzBWLRX2xxwKwabJG7hwjK3FiAehIw5mNeFxQmpycqrfv0XpoxHuNinoA 6FaCHp4hfpt7Q5IXulGS0O9qoGFMxkaTI2zo0p7baV1ElVkR7Ean7DD17TdWfsa63FBI n9279B02KptnKLfTuWQ6vlgFutPBdqa+hJqUwIAUfwNt8McaC1aoOd0vKy6RsZL5whkb F7z0ZUmOVTfH8OWgJiyKusuwwsgg2fLb7woylrj03FpYwFxfHOnF86M5Kk9fDTNNg7mU R7wXiSN+Q6gvDJJexeTmmc/5DNAwNT3/jGvkwWF6qsgQI173B70KgRFAMWJ4Hi3lFZQ5 WIog== X-Gm-Message-State: AOAM532rdJ4geFybaMJFXoK8B9JbfMX8B6ZLlf6c5+J0+CV6VXWW/KN9 rjWpnh39NFobVwmivbhXQC0rYdAuCxk= X-Google-Smtp-Source: ABdhPJxngn1dIdK7Y2CsTXi9S2CvDhQnSZg9UI6fOapkkkuAr/xkbmo7jHaEEvp22b7sQqFhZN6RHg== X-Received: by 2002:a05:6214:c6a:b0:443:6a15:5888 with SMTP id t10-20020a0562140c6a00b004436a155888mr7313538qvj.20.1648800223945; Fri, 01 Apr 2022 01:03:43 -0700 (PDT) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id w3-20020a05622a190300b002e1f084d84bsm1426120qtc.50.2022.04.01.01.03.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Apr 2022 01:03:43 -0700 (PDT) From: cgel.zte@gmail.com X-Google-Original-From: lv.ruyi@zte.com.cn To: mailhol.vincent@wanadoo.fr Cc: gregkh@linuxfoundation.org, lv.ruyi@zte.com.cn, cai.huoqing@linux.dev, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Zeal Robot Subject: [PATCH] usb: host: replace zero-length array with flexible-array member Date: Fri, 1 Apr 2022 08:03:37 +0000 Message-Id: <20220401080337.2407622-1-lv.ruyi@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Lv Ruyi There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Reported-by: Zeal Robot Signed-off-by: Lv Ruyi --- drivers/usb/host/oxu210hp-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index b741670525e3..86f92aadeb0e 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -169,7 +169,7 @@ struct ehci_regs { #define FLAG_CF (1<<0) /* true: we'll support "high speed" */ /* PORTSC: offset 0x44 */ - u32 port_status[0]; /* up to N_PORTS */ + u32 port_status[]; /* up to N_PORTS */ /* 31:23 reserved */ #define PORT_WKOC_E (1<<22) /* wake on overcurrent (enable) */ #define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */