diff options
| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-01-15 23:55:21 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-03-03 08:37:41 +0100 |
| commit | a3f916f2c84f2b9e1d32cc0dbfe326a9e380dbfb (patch) | |
| tree | 3ed5c2697322f8c6ac1bb2fbec5cc463b2143578 /Documentation | |
| parent | 6e83ee075ed74941ccaad4fec503f6b24646e7e0 (diff) | |
pcmcia: disable pcmcia ioctl for !ARM, prepare for removal
The PCMCIA ioctl -- deprecated for years -- suffers from insufficient
locking. As it already has been deprecated for years, with its removal
long overdue, limit it to !SMP and !PREEMPT.
Furthermore, the last legitimate use of the ioctl to be reported
relates to the ARM architecture in 2008.[1] Attempts to resolve
this issue turned out unsuccessful so far.[2] Other usages have only
been reported as hear-say. If there are any legitiate and necessary
use-cases remaining, please speak out before the end of the grace
period until 2.6.3{5,6}(-rc1).
[1] http://lists.infradead.org/pipermail/linux-pcmcia/2008-April/005440.html
see also: http://lkml.org/lkml/2008/2/27/291
[2] http://lists.infradead.org/pipermail/linux-pcmcia/2008-April/005450.html
http://lists.infradead.org/pipermail/linux-pcmcia/2010-January/006740.html
see also: http://lists.infradead.org/pipermail/linux-pcmcia/2008-April/005453.html
CC: Russell King <rmk+kernel@arm.linux.org.uk>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: Robert P. J. Day <rpjday@crashcourse.ca>
CC: Jaswinder Singh Rajput <jaswinder@kernel.org>
CC: linux-kernel@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 732b1fa48cf..3e57a7502e8 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -138,19 +138,25 @@ Who: Mauro Carvalho Chehab <mchehab@infradead.org> --------------------------- What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) -When: November 2005 +When: 2.6.35/2.6.36 Files: drivers/pcmcia/: pcmcia_ioctl.c Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a normal hotpluggable bus, and with it using the default kernel infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA control ioctl needed by cardmgr and cardctl from pcmcia-cs is - unnecessary, and makes further cleanups and integration of the + unnecessary and potentially harmful (it does not provide for + proper locking), and makes further cleanups and integration of the PCMCIA subsystem into the Linux kernel device driver model more difficult. The features provided by cardmgr and cardctl are either handled by the kernel itself now or are available in the new pcmciautils package available at http://kernel.org/pub/linux/utils/kernel/pcmcia/ -Who: Dominik Brodowski <linux@brodo.de> + + For all architectures except ARM, the associated config symbol + has been removed from kernel 2.6.34; for ARM, it will be likely + be removed from kernel 2.6.35. The actual code will then likely + be removed from kernel 2.6.36. +Who: Dominik Brodowski <linux@dominikbrodowski.net> --------------------------- |