From patchwork Thu Apr 12 00:50:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Finn Thain X-Patchwork-Id: 10337673 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 110A66053B for ; Thu, 12 Apr 2018 00:51:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F07B12848B for ; Thu, 12 Apr 2018 00:51:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E0E6228516; Thu, 12 Apr 2018 00:51:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.3 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,URIBL_SBL autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 49A732848B for ; Thu, 12 Apr 2018 00:51:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752759AbeDLAuZ (ORCPT ); Wed, 11 Apr 2018 20:50:25 -0400 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:39856 "EHLO kvm5.telegraphics.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752627AbeDLAuT (ORCPT ); Wed, 11 Apr 2018 20:50:19 -0400 Received: by kvm5.telegraphics.com.au (Postfix, from userid 502) id 971CE299E4; Wed, 11 Apr 2018 20:50:14 -0400 (EDT) To: Geert Uytterhoeven Cc: Jens Axboe , Laurent Vivier , linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, stable@vger.kernel.org, Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org Message-Id: <8087d933d49bbf280ae3d39dc7c46905956ae204.1523493475.git.fthain@telegraphics.com.au> In-Reply-To: References: From: Finn Thain Subject: [PATCH v2 07/10] block/swim: Rename macros to avoid inconsistent inverted logic Date: Wed, 11 Apr 2018 20:50:14 -0400 (EDT) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Sony drive status bits use active-low logic. The swim_readbit() function converts that to 'C' logic for readability. Hence, the sense of the names of the status bit macros should not be inverted. Mostly they are correct. However, the TWOMEG_DRIVE, MFM_MODE and TWOMEG_MEDIA macros have inverted sense (like MkLinux). Fix this inconsistency and make the following patches less confusing. The same problem affects swim3.c so fix that too. No functional change. The FDHD drive status bits are documented in sonydriv.cpp from MAME and in swimiii.h from MkLinux. Cc: Laurent Vivier Cc: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.ozlabs.org Cc: Jens Axboe Cc: stable@vger.kernel.org # v4.14+ Tested-by: Stan Johnson Signed-off-by: Finn Thain Acked-by: Laurent Vivier --- drivers/block/swim.c | 8 ++++---- drivers/block/swim3.c | 6 +++--- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/block/swim.c b/drivers/block/swim.c index 7b847170cf71..d1ee4670666a 100644 --- a/drivers/block/swim.c +++ b/drivers/block/swim.c @@ -110,7 +110,7 @@ struct iwm { /* Select values for swim_select and swim_readbit */ #define READ_DATA_0 0x074 -#define TWOMEG_DRIVE 0x075 +#define ONEMEG_DRIVE 0x075 #define SINGLE_SIDED 0x076 #define DRIVE_PRESENT 0x077 #define DISK_IN 0x170 @@ -118,9 +118,9 @@ struct iwm { #define TRACK_ZERO 0x172 #define TACHO 0x173 #define READ_DATA_1 0x174 -#define MFM_MODE 0x175 +#define GCR_MODE 0x175 #define SEEK_COMPLETE 0x176 -#define ONEMEG_MEDIA 0x177 +#define TWOMEG_MEDIA 0x177 /* Bits in handshake register */ @@ -612,7 +612,7 @@ static void setup_medium(struct floppy_state *fs) struct floppy_struct *g; fs->disk_in = 1; fs->write_protected = swim_readbit(base, WRITE_PROT); - fs->type = swim_readbit(base, ONEMEG_MEDIA); + fs->type = swim_readbit(base, TWOMEG_MEDIA); if (swim_track00(base)) printk(KERN_ERR diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index af51015d056e..469541c1e51e 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -148,7 +148,7 @@ struct swim3 { #define MOTOR_ON 2 #define RELAX 3 /* also eject in progress */ #define READ_DATA_0 4 -#define TWOMEG_DRIVE 5 +#define ONEMEG_DRIVE 5 #define SINGLE_SIDED 6 /* drive or diskette is 4MB type? */ #define DRIVE_PRESENT 7 #define DISK_IN 8 @@ -156,9 +156,9 @@ struct swim3 { #define TRACK_ZERO 10 #define TACHO 11 #define READ_DATA_1 12 -#define MFM_MODE 13 +#define GCR_MODE 13 #define SEEK_COMPLETE 14 -#define ONEMEG_MEDIA 15 +#define TWOMEG_MEDIA 15 /* Definitions of values used in writing and formatting */ #define DATA_ESCAPE 0x99