kernel/linux.git/drivers/char/misc.c, branch linux-2.6.22.y

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

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel Signed-off-by: Adrian Bunk

[PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed

2006-06-26T19:25:08+00:00

Also fixes all drivers that set this field. Signed-off-by: Greg Kroah-Hartman

[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree

2006-06-26T19:25:08+00:00

Also fixes up all files that #include it. Signed-off-by: Greg Kroah-Hartman

[PATCH] devfs: Remove devfs_remove() function from the kernel tree

2006-06-26T19:25:07+00:00

Removes the devfs_remove() function and all callers of it. Signed-off-by: Greg Kroah-Hartman

[PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree

2006-06-26T19:25:07+00:00

Removes the devfs_mk_cdev() function and all callers of it. Signed-off-by: Greg Kroah-Hartman

[PATCH] mark f_ops const in the inode

2006-03-28T17:16:05+00:00

Mark the f_ops members of inodes as const, as well as fix the ripple-through this causes by places that copy this f_ops and then "do stuff" with it. Signed-off-by: Arjan van de Ven Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds