linux-toradex.git/kernel/params.c, branch v2.6.23.12

fix param_sysfs_builtin name length check

2007-11-16T16:12:43+00:00

patch 22800a2830ec07e7cc5c837999890ac47cc7f5de in mainline.

Commit faf8c714f4508207a9c81cc94dafc76ed6680b44 caused a regression:
parameter names longer than MAX_KBUILD_MODNAME will now be rejected,
although we just need to keep the module name part that short.  This patch
restores the old behaviour while still avoiding that memchr is called with
its length parameter larger than the total string length.

Signed-off-by: Jan Kiszka 
Cc: Dave Young 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Cc: Chuck Ebbert 
Signed-off-by: Greg Kroah-Hartman

param_sysfs_builtin memchr argument fix

2007-11-16T16:12:42+00:00

patch faf8c714f4508207a9c81cc94dafc76ed6680b44 in mainline.

If memchr argument is longer than strlen(kp->name), there will be some
weird result.

It will casuse duplicate filenames in sysfs for the "nousb".  kernel
warning messages are as bellow:

sysfs: duplicate filename 'usbcore' can not be created
WARNING: at fs/sysfs/dir.c:416 sysfs_add_one()
 [] sysfs_add_one+0xa0/0xe0
 [] create_dir+0x48/0xb0
 [] sysfs_create_dir+0x29/0x50
 [] create_dir+0x1b/0x50
 [] kobject_add+0x46/0x150
 [] kobject_init+0x3a/0x80
 [] kernel_param_sysfs_setup+0x50/0xb0
 [] param_sysfs_builtin+0xee/0x130
 [] param_sysfs_init+0x23/0x60
 [] __next_cpu+0x12/0x20
 [] kernel_init+0x0/0xb0
 [] kernel_init+0x0/0xb0
 [] do_initcalls+0x46/0x1e0
 [] create_proc_entry+0x52/0x90
 [] register_irq_proc+0x9c/0xc0
 [] proc_mkdir_mode+0x34/0x50
 [] kernel_init+0x0/0xb0
 [] kernel_init+0x62/0xb0
 [] kernel_thread_helper+0x7/0x14
 =======================
kobject_add failed for usbcore with -EEXIST, don't try to register things with the same name in the same directory.
 [] kobject_add+0xf6/0x150
 [] kernel_param_sysfs_setup+0x50/0xb0
 [] param_sysfs_builtin+0xee/0x130
 [] param_sysfs_init+0x23/0x60
 [] __next_cpu+0x12/0x20
 [] kernel_init+0x0/0xb0
 [] kernel_init+0x0/0xb0
 [] do_initcalls+0x46/0x1e0
 [] create_proc_entry+0x52/0x90
 [] register_irq_proc+0x9c/0xc0
 [] proc_mkdir_mode+0x34/0x50
 [] kernel_init+0x0/0xb0
 [] kernel_init+0x62/0xb0
 [] kernel_thread_helper+0x7/0x14
 =======================
Module 'usbcore' failed to be added to sysfs, error number -17
The system will be unstable now.

Signed-off-by: Dave Young 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Cc: Chuck Ebbert 
Signed-off-by: Greg Kroah-Hartman

modules: better error messages when modules fail to load due to a sysfs problem.

2007-07-30T21:25:23+00:00

This helps people when debugging problems like the ones that were in the
recent -mm releases.


Signed-off-by: Greg Kroah-Hartman

sysfs: kill unnecessary attribute->owner

2007-07-11T23:09:06+00:00

sysfs is now completely out of driver/module lifetime game.  After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners.  Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.

This patch kills now unnecessary attribute->owner.  Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.

For more info regarding lifetime rule cleanup, please read the
following message.

  http://article.gmane.org/gmane.linux.kernel/510293

(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)

Signed-off-by: Tejun Heo 
Cc: Cornelia Huck 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

kernel/params.c: fix lying comment for param_array()

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

This fixes the comment for the function param_array. Which lies that it
only *temporarily* mangle the input string @val.

Signed-off-by: Bert Wesarg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

remove "struct subsystem" as it is no longer needed

2007-05-03T01:57:59+00:00

We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman

[PATCH] fix kernel oops with badly formatted module option

2007-04-12T22:31:41+00:00

Catch malformed kernel parameter usage of "param = value".  Spaces are not
supported, but don't cause a kernel fault on such usage, just report an
error.

Signed-off-by: Randy Dunlap 
Acked-by: Larry Finger 
Acked-by: Rusty Russell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Revert "Driver core: let request_module() send a /sys/modules/kmod/-uevent"

2007-02-23T22:54:57+00:00

This reverts commit c353c3fb0700a3c17ea2b0237710a184232ccd7f.

It turns out that we end up with a loop trying to load the unix
module and calling netfilter to do that.  Will redo the patch
later to not have this loop.

Acked-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

sysfs: fix build errors: uevent with CONFIG_SYSFS=n

2007-02-16T23:19:18+00:00

Fix source files to build with CONFIG_SYSFS=n.
module_subsys is not available.

SYSFS=n, MODULES=y:	T:y
SYSFS=n, MODULES=n:	T:y

SYSFS=y, MODULES=y:	T:y
SYSFS=y, MODULES=n:	T:y

Signed-off-by: Randy Dunlap 
Signed-off-by: Greg Kroah-Hartman

Driver core: let request_module() send a /sys/modules/kmod/-uevent

2007-02-16T23:19:15+00:00

On recent systems, calls to /sbin/modprobe are handled by udev depending
on the kind of device the kernel has discovered. This patch creates an
uevent for the kernels internal request_module(), to let udev take control
over the request, instead of forking the binary directly by the kernel.
The direct execution of /sbin/modprobe can be disabled by setting:
  /sys/module/kmod/mod_request_helper (/proc/sys/kernel/modprobe)
to an empty string, the same way /proc/sys/kernel/hotplug is disabled on an
udev system.

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman