cdrom: remove the unused driver specific disc change ioctl

This was only used by the ide-cd driver, which went away in
commit b7fb14d3ac63 ("ide: remove the legacy ide driver")
so we might as well t

cdrom: remove the unused driver specific disc change ioctl

This was only used by the ide-cd driver, which went away in
commit b7fb14d3ac63 ("ide: remove the legacy ide driver")
so we might as well take advantage of that and get rid of
this hook as well.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Link: https://lore.kernel.org/all/20220427132436.12795-2-paul.gortmaker@windriver.com
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20220515205833.944139-3-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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drivers/cdrom: improved ioctl for media change detection

The current implementation of the CDROM_MEDIA_CHANGED ioctl relies on
global state, meaning that only one process can detect a disc change
wh

drivers/cdrom: improved ioctl for media change detection

The current implementation of the CDROM_MEDIA_CHANGED ioctl relies on
global state, meaning that only one process can detect a disc change
while the ioctl call will return 0 for other calling processes afterwards
(see bug 213267).

This introduces a new cdrom ioctl, CDROM_TIMED_MEDIA_CHANGE, that
works by maintaining a timestamp of the last detected disc change instead
of a boolean flag: Processes calling this ioctl command can provide
a timestamp of the last disc change known to them and receive
an indication whether the disc was changed since then and the updated
timestamp.

I considered fixing the buggy behavior in the original
CDROM_MEDIA_CHANGED ioctl but that would require maintaining state
for each calling process in the kernel, which seems like a worse
solution than introducing this new ioctl.

Signed-off-by: Lukas Prediger <lumip@lumip.de>
Link: https://lore.kernel.org/all/20210912191207.74449-1-lumip@lumip.de
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210913230942.1188-1-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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docs: cdrom-standard.rst: get rid of uneeded UTF-8 chars

This file was converted from a LaTeX one. The conversion used
some UTF-8 characters at the literal blocks. Replace them
by normal ASCII chara

docs: cdrom-standard.rst: get rid of uneeded UTF-8 chars

This file was converted from a LaTeX one. The conversion used
some UTF-8 characters at the literal blocks. Replace them
by normal ASCII characters.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/79c3f482da17ea48d69b6e6ad1b7fb102b9dd7bf.1620744606.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

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docs: cdrom: Fix a typo and rst markup

"The capability fags" should be "The capability flags".

In rst markup, a incorrect markup expression is causing bad rendering in
Sphinx output. Replace the er

docs: cdrom: Fix a typo and rst markup

"The capability fags" should be "The capability flags".

In rst markup, a incorrect markup expression is causing bad rendering in
Sphinx output. Replace the erroneous single quote by a backquote.

Signed-off-by: Remi Andruccioli <remi.andruccioli@gmail.com>
Link: https://lore.kernel.org/r/20200808163123.17643-1-remi.andruccioli@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

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cdrom: remove the unused cdrom_media_changed function

As well as the ->media_changed method. All these are left over from
before the drivers were switched over to the check_events scheme.

Signed-o

cdrom: remove the unused cdrom_media_changed function

As well as the ->media_changed method. All these are left over from
before the drivers were switched over to the check_events scheme.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

show more ...

docs: cdrom: convert docs to ReST and rename to *.rst

The stuff there is almost already at ReST format. A
conversion for them is trivial: just add a missing titles
and fix some scape codes for them

docs: cdrom: convert docs to ReST and rename to *.rst

The stuff there is almost already at ReST format. A
conversion for them is trivial: just add a missing titles
and fix some scape codes for them to match ReST syntax.

While here, rename the cdrom-standard.txt, with was converted
from LaTeX to ReST on the previous patch, and add it to the
index file.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

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Merge tag 'docs-5.9-2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
"A handful of obvious fixes that wandered in during the merge window"

* tag 'do

Merge tag 'docs-5.9-2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
"A handful of obvious fixes that wandered in during the merge window"

* tag 'docs-5.9-2' of git://git.lwn.net/linux:
Documentation/locking/locktypes: fix the typo
doc/zh_CN: resolve undefined label warning in admin-guide index
doc/zh_CN: fix title heading markup in admin-guide cpu-load
docs: remove the 2.6 "Upgrading I2C Drivers" guide
docs: Correct the release date of 5.2 stable
mailmap: Update comments for with format and more detalis
docs: cdrom: Fix a typo and rst markup
Doc: admin-guide: use correct legends in kernel-parameters.txt
Documentation/features: refresh RISC-V arch support files
documentation: coccinelle: Improve command example for make C={1,2}
Core-api: Documentation: Replace deprecated :c:func: Usage
Dev-tools: Documentation: Replace deprecated :c:func: Usage
Filesystems: Documentation: Replace deprecated :c:func: Usage
docs: trace: fix a typo

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docs: cdrom: Fix a typo and rst markup

"The capability fags" should be "The capability flags".

In rst markup, a incorrect markup expression is causing bad rendering in
Sphinx ou

docs: cdrom: Fix a typo and rst markup

"The capability fags" should be "The capability flags".

In rst markup, a incorrect markup expression is causing bad rendering in
Sphinx output. Replace the erroneous single quote by a backquote.

Signed-off-by: Remi Andruccioli <remi.andruccioli@gmail.com>
Link: https://lore.kernel.org/r/20200808163123.17643-1-remi.andruccioli@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

show more ...

cdrom: remove the unused cdrom_media_changed function

As well as the ->media_changed method. All these are left over from
before the drivers were switched over to the check_events schem

cdrom: remove the unused cdrom_media_changed function

As well as the ->media_changed method. All these are left over from
before the drivers were switched over to the check_events scheme.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

show more ...

docs: cdrom: convert docs to ReST and rename to *.rst

The stuff there is almost already at ReST format. A
conversion for them is trivial: just add a missing titles
and fix some scape

docs: cdrom: convert docs to ReST and rename to *.rst

The stuff there is almost already at ReST format. A
conversion for them is trivial: just add a missing titles
and fix some scape codes for them to match ReST syntax.

While here, rename the cdrom-standard.txt, with was converted
from LaTeX to ReST on the previous patch, and add it to the
index file.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

show more ...