From patchwork Sat Nov 28 22:40:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Ravnborg X-Patchwork-Id: 334549 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 8E5A2C64E7D for ; Sat, 28 Nov 2020 22:43:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A3DB20702 for ; Sat, 28 Nov 2020 22:43:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ofNdOjN3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387994AbgK1Wmy (ORCPT ); Sat, 28 Nov 2020 17:42:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387760AbgK1Wmx (ORCPT ); Sat, 28 Nov 2020 17:42:53 -0500 Received: from mail-lj1-x243.google.com (mail-lj1-x243.google.com [IPv6:2a00:1450:4864:20::243]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B7E5C061A4A for ; Sat, 28 Nov 2020 14:41:41 -0800 (PST) Received: by mail-lj1-x243.google.com with SMTP id s9so10557046ljo.11 for ; Sat, 28 Nov 2020 14:41:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=X+z/W9959CxKgG4WcN4Iy85oHK/P3LJfjbdab6tB79s=; b=ofNdOjN3WlUdlrHX/axL+yDyfNp545lGepiNBKQTQhrGcpIvCOWIuIjmylzgvkYZo3 zZ/ft8dSvifUehjxethC+jjHyVhbJbbjzOyZv7I45z0hMnk7U/WcWz59qqdRlHjau7Y8 N/Jpsm0jU14ltV83pn3FBcOgxnP5ZObDgmQ6RYyZTh0MxWUufx5lZXZFbnPzAblh+b7X 2aVq6lJPoySRtc8kJrl/DwvplCIv5AzOmCPoU306KRinlxOrwDWgnPpmXiseo/BiaShA zovEbZQ6radlpeQZs5vPGCcwjpAYs9QIKn569HPMbFl38taCFfnbhp/Lzbx7qFDcJnbG Z5MQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=X+z/W9959CxKgG4WcN4Iy85oHK/P3LJfjbdab6tB79s=; b=idjQvITCAnVyFLHsWKU5itVW9uQmYVeQRPVEwbeJNSE1FTKbZCWPDPMqgQKIWIk18j xBybEN4ns4Zh77LpyNIdR7oVqRRPZO+jCMKqWvf9fVPyM/6NLX3fAbvb4/POJHZ9Q6EY UXHoRmkWUTf2UxodKpiBdNJnv8He53T1510nt+vxKQFnqfuUt7f9HIRuwvi7NnK3zQs/ kCM/cLW0cp3yWHv4bWFuZ3yGs+lT7c4rLYvcUPCUT0gom3Y/UKRTNT4yn+JtbaiuWorM k2I3SfhzS9cCftWIfxN+mxTRyFK7IvdGEhO7GZvMW492ybtTFuD1c53+pYZ55fNZd+g/ Lubw== X-Gm-Message-State: AOAM530Ob2eM4hcZ+hGYKlvheAd5gpZd6jHm2AP2Ut6USb6yhufktKSS S95wZ01Ye2zb+MQDCZAa0kL5/Za7w+K3wg== X-Google-Smtp-Source: ABdhPJwNCw1BRqGWU4zvMymxV8jqichRChera60GIW5wRzO4XHUQq1DJ6DguS8QDaDBs7tzG3iq0Xg== X-Received: by 2002:a2e:a376:: with SMTP id i22mr6714027ljn.217.1606603299518; Sat, 28 Nov 2020 14:41:39 -0800 (PST) Received: from saturn.localdomain ([2a00:fd00:8060:1c00:a4c7:9ff9:a160:aad0]) by smtp.gmail.com with ESMTPSA id w21sm1236857lff.280.2020.11.28.14.41.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Nov 2020 14:41:39 -0800 (PST) Sender: Sam Ravnborg From: Sam Ravnborg To: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, Lee Jones Cc: Aditya Pakki , Alexander Klimov , Alex Dewar , Antonino Daplas , Arnd Bergmann , Bartlomiej Zolnierkiewicz , Benjamin Herrenschmidt , Daniel Vetter , Evgeny Novikov , Florian Tobias Schandinat , George Kennedy , Greg Kroah-Hartman , Gustavo Silva , Jani Nikula , Jason Yan , Jingoo Han , Jiri Slaby , Joe Perches , Kristoffer Ericson , Laurent Pinchart , Mike Rapoport , Nathan Chancellor , Peilin Ye , Peter Rosin , Qilong Zhang , Randy Dunlap , Saeed Mirzamohammadi , Sam Ravnborg , Tetsuo Handa , Thomas Winischhofer , Thomas Zimemrmann , Vaibhav Gupta , Xiaofei Tan Subject: [PATCH v2 09/28] video: fbdev: sis: Fix set but not used warnings in init.c Date: Sat, 28 Nov 2020 23:40:55 +0100 Message-Id: <20201128224114.1033617-10-sam@ravnborg.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201128224114.1033617-1-sam@ravnborg.org> References: <20201128224114.1033617-1-sam@ravnborg.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Fix set bit not used warnings by removing the code the assign the variables and the definition of the variables. A register read is kept as it may have unknown side-effects. This removes a lot of unused code - which is always a good thing to do. v2: - Updated subject (Lee) Signed-off-by: Sam Ravnborg Cc: Thomas Winischhofer Cc: Lee Jones --- drivers/video/fbdev/sis/init.c | 34 ++++++---------------------------- 1 file changed, 6 insertions(+), 28 deletions(-) diff --git a/drivers/video/fbdev/sis/init.c b/drivers/video/fbdev/sis/init.c index fde27feae5d0..b77ea1a8825a 100644 --- a/drivers/video/fbdev/sis/init.c +++ b/drivers/video/fbdev/sis/init.c @@ -2648,7 +2648,7 @@ static void SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex, unsigned short RRTI) { - unsigned short data, infoflag = 0, modeflag, resindex; + unsigned short data, infoflag = 0, modeflag; #ifdef CONFIG_FB_SIS_315 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase; unsigned short data2, data3; @@ -2659,7 +2659,7 @@ SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo, if(SiS_Pr->UseCustomMode) { infoflag = SiS_Pr->CInfoFlag; } else { - resindex = SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex); + SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex); if(ModeNo > 0x13) { infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag; } @@ -3538,17 +3538,13 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, struct fb_var_screeninfo *var, bool writeres ) { - unsigned short HRE, HBE, HRS, HBS, HDE, HT; - unsigned short VRE, VBE, VRS, VBS, VDE, VT; - unsigned char sr_data, cr_data, cr_data2; - int A, B, C, D, E, F, temp; + unsigned short HRE, HBE, HRS, HDE; + unsigned short VRE, VBE, VRS, VDE; + unsigned char sr_data, cr_data; + int B, C, D, E, F, temp; sr_data = crdata[14]; - /* Horizontal total */ - HT = crdata[0] | ((unsigned short)(sr_data & 0x03) << 8); - A = HT + 5; - /* Horizontal display enable end */ HDE = crdata[1] | ((unsigned short)(sr_data & 0x0C) << 6); E = HDE + 1; @@ -3557,9 +3553,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, HRS = crdata[4] | ((unsigned short)(sr_data & 0xC0) << 2); F = HRS - E - 3; - /* Horizontal blank start */ - HBS = crdata[2] | ((unsigned short)(sr_data & 0x30) << 4); - sr_data = crdata[15]; cr_data = crdata[5]; @@ -3588,13 +3581,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, sr_data = crdata[13]; cr_data = crdata[7]; - /* Vertical total */ - VT = crdata[6] | - ((unsigned short)(cr_data & 0x01) << 8) | - ((unsigned short)(cr_data & 0x20) << 4) | - ((unsigned short)(sr_data & 0x01) << 10); - A = VT + 2; - /* Vertical display enable end */ VDE = crdata[10] | ((unsigned short)(cr_data & 0x02) << 7) | @@ -3609,14 +3595,6 @@ SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata, ((unsigned short)(sr_data & 0x08) << 7); F = VRS + 1 - E; - cr_data2 = (crdata[16] & 0x01) << 5; - - /* Vertical blank start */ - VBS = crdata[11] | - ((unsigned short)(cr_data & 0x08) << 5) | - ((unsigned short)(cr_data2 & 0x20) << 4) | - ((unsigned short)(sr_data & 0x04) << 8); - /* Vertical blank end */ VBE = crdata[12] | ((unsigned short)(sr_data & 0x10) << 4); temp = VBE - ((E - 1) & 511);