From patchwork Tue Sep 29 03:26:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Almeida X-Patchwork-Id: 255573 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=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 0651EC2D0A8 for ; Tue, 29 Sep 2020 03:26:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AFB81216C4 for ; Tue, 29 Sep 2020 03:26:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="d7Jb0pMR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727300AbgI2D0g (ORCPT ); Mon, 28 Sep 2020 23:26:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727077AbgI2D0g (ORCPT ); Mon, 28 Sep 2020 23:26:36 -0400 Received: from mail-qv1-xf41.google.com (mail-qv1-xf41.google.com [IPv6:2607:f8b0:4864:20::f41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF932C061755; Mon, 28 Sep 2020 20:26:35 -0700 (PDT) Received: by mail-qv1-xf41.google.com with SMTP id h1so1617638qvo.9; Mon, 28 Sep 2020 20:26:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=xNL+JIXJEkaTd9PqUlCjJsAHaPEKb5MgmMlSqxfrt/Q=; b=d7Jb0pMRJ6Mu6/iNZqXuhoefJjUkSrhyahenPRxDqAO1HvA231sPyjNFpbsrvcumja zXJLlyfiDtGHJrHavukLFo/gBFQ5j1kj3djbs8JiwTo5HTYaIVs7RI8I5QTzoTBXvnNG BlaX9PclaaXrtKLNeSIhXBQO/7haT30eYJvAr9BxhvKUvUxJxO4dRgZVpQbC5Lae8mYL TUIhyG1BYI2zN67lgDbPmFmdBTJ7jdVze18P8vZE25HvwtCcwVkQZU4kL3PFxXzUupbQ r9wjpsLW+jTygNBiQbhXqwJOf502BwdCQv7YxsNVekPcJ1ghBiRRvXzvX7FgWI12ETpo jCiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=xNL+JIXJEkaTd9PqUlCjJsAHaPEKb5MgmMlSqxfrt/Q=; b=mt72rqLJ/Z5QTGIhzaguhmN5YnnBK4cZt/dVIazNns95SUSTmjnqBRinYbIY3wq5/s Th5+dCkuGA51+AM08VjLQT+H7PoFizXW17exF6qWFcE9SJYbOB9je4ZyTLRYC+h2wA7+ akOhfDrTZaHI0o5zrnrsaQdeUUvYu0zQdGRG6YlkkmBoNQ60xzOVY+lX+g7lxceMGGWQ ZQz0jfSULPZ+lNn0RmPL2RHSrSvBvB6v54rM8Ucs6Yl0sUDSL6UrBfoOfzqjn5kuFBQo zoOHXp1FFpjvDeWs0vPgIFutRfkKeHjlDM7yyTqQOOmDoQU2WQ3rpTHoK23llf0raWoj S2DA== X-Gm-Message-State: AOAM530w/w9Gl8UX5kXB0rRCuKmIaEA+07jCCK7Q2l0GA66s2mQO0B7D nAIywI8XMi1a58ztbinW+k4= X-Google-Smtp-Source: ABdhPJwwB0/KE7j2Zf+eBeNKBpGgEmc3dFw3ABr7bF9Zbo9+hRwQ2Ouy9oGVxwsPFibQb3HFuccanQ== X-Received: by 2002:a0c:a085:: with SMTP id c5mr2774834qva.30.1601349994899; Mon, 28 Sep 2020 20:26:34 -0700 (PDT) Received: from localhost.localdomain ([2804:14d:72b1:8920:da15:c0bd:33c1:e2ad]) by smtp.gmail.com with ESMTPSA id c40sm4010313qtb.72.2020.09.28.20.26.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Sep 2020 20:26:34 -0700 (PDT) From: "Daniel W. S. Almeida" X-Google-Original-From: Daniel W. S. Almeida To: mchehab+huawei@kernel.org, r.verdejo@samsung.com, nicolas@ndufresne.ca Cc: "Daniel W . S . Almeida" , linux-media@vger.kernel.org, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linuxfoundation.org, linux-kernel@vger.kernel.org Subject: [PATCH WIP 1/6] media: vidtv: extract the initial CRC value to into a #define Date: Tue, 29 Sep 2020 00:26:20 -0300 Message-Id: <20200929032625.1548909-1-dwlsalmeida@gmail.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Daniel W. S. Almeida The same constant (0xffffffff) is used in three different functions. Extract it into a #define to avoid repetition. Signed-off-by: Daniel W. S. Almeida --- drivers/media/test-drivers/vidtv/vidtv_psi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/test-drivers/vidtv/vidtv_psi.c b/drivers/media/test-drivers/vidtv/vidtv_psi.c index 3151b300a91b..a24e84adc8ce 100644 --- a/drivers/media/test-drivers/vidtv/vidtv_psi.c +++ b/drivers/media/test-drivers/vidtv/vidtv_psi.c @@ -30,6 +30,7 @@ #define CRC_SIZE_IN_BYTES 4 #define MAX_VERSION_NUM 32 +#define INITIAL_CRC 0xffffffff static const u32 CRC_LUT[256] = { /* from libdvbv5 */ @@ -794,7 +795,7 @@ u32 vidtv_psi_pat_write_into(struct vidtv_psi_pat_write_args args) /* the number of bytes written by this function */ u32 nbytes = 0; const u16 pat_pid = VIDTV_PAT_PID; - u32 crc = 0xffffffff; + u32 crc = INITIAL_CRC; struct vidtv_psi_table_pat_program *p = args.pat->program; @@ -990,7 +991,7 @@ u32 vidtv_psi_pmt_write_into(struct vidtv_psi_pmt_write_args args) { /* the number of bytes written by this function */ u32 nbytes = 0; - u32 crc = 0xffffffff; + u32 crc = INITIAL_CRC; struct vidtv_psi_desc *table_descriptor = args.pmt->descriptor; struct vidtv_psi_table_pmt_stream *stream = args.pmt->stream; @@ -1143,7 +1144,7 @@ u32 vidtv_psi_sdt_write_into(struct vidtv_psi_sdt_write_args args) u32 nbytes = 0; u16 sdt_pid = VIDTV_SDT_PID; /* see ETSI EN 300 468 v1.15.1 p. 11 */ - u32 crc = 0xffffffff; + u32 crc = INITIAL_CRC; struct vidtv_psi_table_sdt_service *service = args.sdt->service; struct vidtv_psi_desc *service_desc = (args.sdt->service) ?