linux-toradex.git/drivers/char/misc.c, branch v2.6.27.57

device create: char: convert device_create to device_create_drvdata

2008-07-22T04:54:41+00:00

device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.

Signed-off-by: Greg Kroah-Hartman

misc: cdev lock_kernel() pushdown

2008-06-20T20:05:48+00:00

misc_open() looks fine, but who knows what all of the misc drivers are
doing in their open() functions?

Signed-off-by: Jonathan Corbet

drivers: use non-racy method for proc entries creation

2008-04-29T15:06:22+00:00

Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev 
Acked-by: Greg Kroah-Hartman 
Cc: Alexey Dobriyan 
Cc: "Eric W. Biederman" 
Acked-by: Dmitry Torokhov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

PM: Remove destroy_suspended_device()

2008-04-20T02:10:28+00:00

After 2.6.24 there was a plan to make the PM core acquire all device
semaphores during a suspend/hibernation to protect itself from
concurrent operations involving device objects.  That proved to be
too heavy-handed and we found a better way to achieve the goal, but
before it happened, we had introduced the functions
device_pm_schedule_removal() and destroy_suspended_device() to allow
drivers to "safely" destroy a suspended device and we had adapted some
drivers to use them.  Now that these functions are no longer necessary,
it seems reasonable to remove them and modify their users to use the
normal device unregistration instead.

Signed-off-by: Rafael J. Wysocki 
Acked-by: Pavel Machek 
Signed-off-by: Greg Kroah-Hartman

Misc: Add possibility to remove misc devices during suspend/resume

2008-02-05T17:44:23+00:00

Make it possible to unregister a misc device object in a safe way during a
suspend/resume cycle.

Signed-off-by: Rafael J. Wysocki 
Cc: Michael Buesch 
Cc: Pavel Machek 
Cc: "John W. Linville" 
Cc: Alan Stern 
Cc: Len Brown 
Cc: Greg KH 
Cc: Kay Sievers 
Cc: Richard Purdie 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Make /proc/misc use seq_list_xxx helpers

2007-07-16T16:05:42+00:00

Simple and stupid - just use the helpers.

Signed-off-by: Pavel Emelianov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

use mutex instead of semaphore for misc char devices

2007-05-08T18:15:15+00:00

The misc character device driver uses a semaphore as mutex.  Use the mutex API
instead of the (binary) semaphore.

Signed-off-by: Matthias Kaehlcke 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Correct misc_register return code handling in several drivers

2006-12-07T16:39:35+00:00

Clean up several code points in which the return code from misc_register is
not handled properly.

Several modules failed to deregister various hooks when misc_register fails,
and this patch cleans them up.  Also there are a few modules that legitimately
don't care about the failure status of misc register.  These drivers however
unilaterally call misc_deregister on module unload.

Since misc_register doesn't initialize the list_head in the init_routine if it
fails, the deregister operation is at risk for oopsing when list_del is
called.  The initial solution was to manually init the list in the miscdev
structure in each of those modules, but the consensus in this thread was to
consolodate and do that universally inside misc_register.

Signed-off-by: Neil Horman 
Cc: Bjorn Helgaas 
Cc: Kylene Jo Hall 
Cc: Dmitry Torokhov 
Cc: Olaf Hering 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Driver core: change misc class_devices to be real devices

2006-12-01T22:51:59+00:00

This also ment that some of the misc drivers had to also be fixed
up as they were assuming the device was a class_device.

Signed-off-by: Greg Kroah-Hartman

[PATCH] make more file_operation structs static

2006-07-03T22:26:59+00:00

Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds