linux-kernel - [PATCH 0/6] Fix cdrom autoclose

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Message-Id: <cover.1513263482.git.msuchanek@suse.de>
Date:   Thu, 14 Dec 2017 16:13:49 +0100
From:   Michal Suchanek <msuchanek@...e.de>
To:     Jens Axboe <axboe@...nel.dk>, Jonathan Corbet <corbet@....net>,
        Borislav Petkov <bp@...en8.de>, Tim Waugh <tim@...erelk.net>,
        "David S. Miller" <davem@...emloft.net>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Michal Suchanek <msuchanek@...e.de>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Kees Cook <keescook@...omium.org>,
        John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: [PATCH 0/6] Fix cdrom autoclose

Hello,

there is cdrom autoclose feature that is supposed to close the tray, wait for
the disc to become ready, and then open the device.

This used to work in ancient times. Then in old times there was a hack in
util-linux which worked around the breakage which probably resulted from
switching to scsi emulation.

Currently util-linux maintainer refuses to merge another hack on the basis that
kernel still has the feature so it should be fixed there. Indeed, to implement
this feature effectively from userspace one would need to know when the CD-ROM
is in the "drive becoming ready" state which is knowledge that never leaves the
hardware-specific driver and is passed neither to userspace nor the generic
cdrom driver.

So this patchset fixes the kernel autoclose implementation in cdrom.c and to
do so reports the "drive becoming ready" state from the harware specific
drivers.

Michal Suchanek (6):
  delay: add poll_event_interruptible
  cdrom: factor out common open_for_* code
  cdrom: wait for tray to close
  cdrom: introduce CDS_DRIVE_ERROR
  Documentetion: cdrom: introduce CDS_DRIVE_ERROR
  cdrom: wait for drive to become ready

 Documentation/cdrom/cdrom-standard.tex |   8 ++-
 Documentation/cdrom/ide-cd             |   6 ++
 Documentation/ioctl/cdrom.txt          |   1 +
 drivers/block/paride/pcd.c             |   2 +-
 drivers/cdrom/cdrom.c                  | 124 ++++++++++++++++-----------------
 drivers/cdrom/gdrom.c                  |   2 +-
 drivers/ide/ide-cd_ioctl.c             |  12 ++--
 drivers/scsi/sr_ioctl.c                |   2 +-
 include/linux/delay.h                  |  12 ++++
 include/uapi/linux/cdrom.h             |   1 +
 10 files changed, 99 insertions(+), 71 deletions(-)

-- 
2.13.6