Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753264AbdLNPOj (ORCPT ); Thu, 14 Dec 2017 10:14:39 -0500 Received: from mx2.suse.de ([195.135.220.15]:52153 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752909AbdLNPOi (ORCPT ); Thu, 14 Dec 2017 10:14:38 -0500 X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" From: Michal Suchanek To: Jens Axboe , linux-kernel@vger.kernel.org Cc: Michal Suchanek Subject: [PATCH 2/6] cdrom: factor out common open_for_* code Date: Thu, 14 Dec 2017 16:13:51 +0100 Message-Id: <02b92e180b06e42d4ff420bb59e284b4147a3eed.1513263482.git.msuchanek@suse.de> X-Mailer: git-send-email 2.13.6 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5953 Lines: 179 The open_for_audio and open_for_data copies are bitrotten in different ways already and will need to update the autoclose logic in both. Signed-off-by: Michal Suchanek --- drivers/cdrom/cdrom.c | 100 ++++++++++++++++++-------------------------------- 1 file changed, 36 insertions(+), 64 deletions(-) diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index e36d160c458f..e976d3d0180d 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -1031,12 +1031,12 @@ static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks) } static -int open_for_data(struct cdrom_device_info *cdi) +int open_for_common(struct cdrom_device_info *cdi, tracktype *tracks) { int ret; const struct cdrom_device_ops *cdo = cdi->ops; - tracktype tracks; - cd_dbg(CD_OPEN, "entering open_for_data\n"); + + cd_dbg(CD_OPEN, "entering " __func__ "\n"); /* Check if the driver can report drive status. If it can, we can do clever things. If it can't, well, we at least tried! */ if (cdo->drive_status != NULL) { @@ -1048,7 +1048,7 @@ int open_for_data(struct cdrom_device_info *cdi) if (CDROM_CAN(CDC_CLOSE_TRAY) && cdi->options & CDO_AUTO_CLOSE) { cd_dbg(CD_OPEN, "trying to close the tray\n"); - ret=cdo->tray_move(cdi,0); + ret = cdo->tray_move(cdi, 0); if (ret) { cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n"); /* Ignore the error from the low @@ -1056,37 +1056,45 @@ int open_for_data(struct cdrom_device_info *cdi) couldn't close the tray. We only care that there is no disc in the drive, since that is the _REAL_ problem here.*/ - ret=-ENOMEDIUM; - goto clean_up_and_return; + return -ENOMEDIUM; } } else { cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; + return -ENOMEDIUM; } /* Ok, the door should be closed now.. Check again */ ret = cdo->drive_status(cdi, CDSL_CURRENT); - if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { + if ((ret == CDS_NO_DISC) || (ret == CDS_TRAY_OPEN)) { cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); cd_dbg(CD_OPEN, "tray might not contain a medium\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; + return -ENOMEDIUM; } cd_dbg(CD_OPEN, "the tray is now closed\n"); } - /* the door should be closed now, check for the disc */ - ret = cdo->drive_status(cdi, CDSL_CURRENT); - if (ret!=CDS_DISC_OK) { - ret = -ENOMEDIUM; - goto clean_up_and_return; - } + if (ret != CDS_DISC_OK) + return -ENOMEDIUM; } - cdrom_count_tracks(cdi, &tracks); - if (tracks.error == CDS_NO_DISC) { + cdrom_count_tracks(cdi, tracks); + if (tracks->error == CDS_NO_DISC) { cd_dbg(CD_OPEN, "bummer. no disc.\n"); - ret=-ENOMEDIUM; - goto clean_up_and_return; + return -ENOMEDIUM; } + + return 0; +} + +static +int open_for_data(struct cdrom_device_info *cdi) +{ + int ret; + const struct cdrom_device_ops *cdo = cdi->ops; + tracktype tracks; + + cd_dbg(CD_OPEN, "entering " __func__ "\n"); + ret = open_for_common(cdi, &tracks); + if (ret) + goto clean_up_and_return; + /* CD-Players which don't use O_NONBLOCK, workman * for example, need bit CDO_CHECK_TYPE cleared! */ if (tracks.data==0) { @@ -1196,53 +1204,17 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, /* This code is similar to that in open_for_data. The routine is called whenever an audio play operation is requested. */ -static int check_for_audio_disc(struct cdrom_device_info *cdi, - const struct cdrom_device_ops *cdo) +static int check_for_audio_disc(struct cdrom_device_info *cdi) { int ret; tracktype tracks; cd_dbg(CD_OPEN, "entering check_for_audio_disc\n"); if (!(cdi->options & CDO_CHECK_TYPE)) return 0; - if (cdo->drive_status != NULL) { - ret = cdo->drive_status(cdi, CDSL_CURRENT); - cd_dbg(CD_OPEN, "drive_status=%d\n", ret); - if (ret == CDS_TRAY_OPEN) { - cd_dbg(CD_OPEN, "the tray is open...\n"); - /* can/may i close it? */ - if (CDROM_CAN(CDC_CLOSE_TRAY) && - cdi->options & CDO_AUTO_CLOSE) { - cd_dbg(CD_OPEN, "trying to close the tray\n"); - ret=cdo->tray_move(cdi,0); - if (ret) { - cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n"); - /* Ignore the error from the low - level driver. We don't care why it - couldn't close the tray. We only care - that there is no disc in the drive, - since that is the _REAL_ problem here.*/ - return -ENOMEDIUM; - } - } else { - cd_dbg(CD_OPEN, "bummer. this driver can't close the tray.\n"); - return -ENOMEDIUM; - } - /* Ok, the door should be closed now.. Check again */ - ret = cdo->drive_status(cdi, CDSL_CURRENT); - if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) { - cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n"); - return -ENOMEDIUM; - } - if (ret!=CDS_DISC_OK) { - cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n"); - return -EIO; - } - cd_dbg(CD_OPEN, "the tray is now closed\n"); - } - } - cdrom_count_tracks(cdi, &tracks); - if (tracks.error) - return(tracks.error); + + ret = open_for_common(cdi, &tracks); + if (ret) + return ret; if (tracks.audio==0) return -EMEDIUMTYPE; @@ -2710,7 +2682,7 @@ static int cdrom_ioctl_play_trkind(struct cdrom_device_info *cdi, if (copy_from_user(&ti, argp, sizeof(ti))) return -EFAULT; - ret = check_for_audio_disc(cdi, cdi->ops); + ret = check_for_audio_disc(cdi); if (ret) return ret; return cdi->ops->audio_ioctl(cdi, CDROMPLAYTRKIND, &ti); @@ -2758,7 +2730,7 @@ static int cdrom_ioctl_audioctl(struct cdrom_device_info *cdi, if (!CDROM_CAN(CDC_PLAY_AUDIO)) return -ENOSYS; - ret = check_for_audio_disc(cdi, cdi->ops); + ret = check_for_audio_disc(cdi); if (ret) return ret; return cdi->ops->audio_ioctl(cdi, cmd, NULL); -- 2.13.6