user/sven/linux.git/include/linux/miscdevice.h, branch v3.10.107

HID: uhid: allocate static minor

2013-10-13T23:08:35Z

commit 19872d20c890073c5207d9e02bb8f14d451a11eb upstream. udev has this nice feature of creating "dead" /dev/ device-nodes if it finds a devnode: modalias. Once the node is accessed, the kernel automatically loads the module that provides the node. However, this requires udev to know the major:minor code to use for the node. This feature was introduced by: commit 578454ff7eab61d13a26b568f99a89a2c9edc881 Author: Kay Sievers Date: Thu May 20 18:07:20 2010 +0200 driver core: add devname module aliases to allow module on-demand auto-loading However, uhid uses dynamic minor numbers so this doesn't actually work. We need to load uhid to know which minor it's going to use. Hence, allocate a static minor (just like uinput does) and we're good to go. Reported-by: Tom Gundersen Signed-off-by: David Herrmann Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman

[SCSI] miscdevice: Adding support for MPT3SAS_MINOR(222)

2012-12-01T10:07:54Z

Signed-off-by: Sreekanth Reddy Reviewed-by: Nagalakshmi Nandigama Signed-off-by: James Bottomley

xen/mce: Add mcelog support for Xen platform

2012-07-19T19:51:36Z

When MCA error occurs, it would be handled by Xen hypervisor first, and then the error information would be sent to initial domain for logging. This patch gets error information from Xen hypervisor and convert Xen format error into Linux format mcelog. This logic is basically self-contained, not touching other kernel components. By using tools like mcelog tool users could read specific error information, like what they did under native Linux. To test follow directions outlined in Documentation/acpi/apei/einj.txt Acked-and-tested-by: Borislav Petkov Signed-off-by: Ke, Liping Signed-off-by: Jiang, Yunhong Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Liu, Jinsong Signed-off-by: Konrad Rzeszutek Wilk

vhost-net: add module alias (v2.1)

2012-01-13T18:12:23Z

By adding some module aliases, programs (or users) won't have to explicitly call modprobe. Vhost-net will always be available if built into the kernel. It does require assigning a permanent minor number for depmod to work. Also: - use C99 style initialization. - add missing entry in documentation for loop-control Signed-off-by: Stephen Hemminger Acked-By: Kay Sievers Signed-off-by: David S. Miller

switch miscdevice to umode_t

2012-01-04T03:55:15Z

Signed-off-by: Al Viro

miscdevice.h: fix up implicit use of lists and types

2011-10-31T23:32:29Z

By removing the implicit presence of module.h from this file, we will see things like: In file included from fs/dlm/user.c:9: include/linux/miscdevice.h:50: error: field ‘list’ has incomplete type include/linux/miscdevice.h:54: error: expected specifier-qualifier-list before ‘mode_t’ Call out lists.h and types.h for inclusion to fix each of the above respectively. Signed-off-by: Paul Gortmaker

miscdevice.h: delete unnecessary inclusion of module.h

2011-10-31T23:32:26Z

This file has a define MODULE_ALIAS_MISCDEV which in turn will use the MODULE_ALIAS define, but only if the former is explicitly used by modular device driver code (and such code should be already including module.h). Delete the include, since module.h is such a giant thing that we don't want it implicitly sneaking into compiles where it isn't specifically required. Signed-off-by: Paul Gortmaker

loop: add management interface for on-demand device allocation

2011-07-31T20:08:04Z

Loop devices today have a fixed pre-allocated number of usually 8. The number can only be changed at module init time. To find a free device to use, /dev/loop%i needs to be scanned, and all devices need to be opened until a free one is possibly found. This adds a new /dev/loop-control device node, that allows to dynamically find or allocate a free device, and to add and remove loop devices from the running system: LOOP_CTL_ADD adds a specific device. Arg is the number of the device. It returns the device i or a negative error code. LOOP_CTL_REMOVE removes a specific device, Arg is the number the device. It returns the device i or a negative error code. LOOP_CTL_GET_FREE finds the next unbound device or allocates a new one. No arg is given. It returns the device i or a negative error code. The loop kernel module gets automatically loaded when /dev/loop-control is accessed the first time. The alias specified in the module, instructs udev to create this 'dead' device node, even when the module is not loaded. Example: cfd = open("/dev/loop-control", O_RDWR); # add a new specific loop device err = ioctl(cfd, LOOP_CTL_ADD, devnr); # remove a specific loop device err = ioctl(cfd, LOOP_CTL_REMOVE, devnr); # find or allocate a free loop device to use devnr = ioctl(cfd, LOOP_CTL_GET_FREE); sprintf(loopname, "/dev/loop%i", devnr); ffd = open("backing-file", O_RDWR); lfd = open(loopname, O_RDWR); err = ioctl(lfd, LOOP_SET_FD, ffd); Cc: Tejun Heo Cc: Karel Zak Signed-off-by: Kay Sievers Signed-off-by: Jens Axboe

Input: uinput - add devname alias to allow module on-demand load

2010-08-21T07:37:40Z

Recent modprobe and udev versions allow to create device nodes for modules which are not loaded. Only the first access will cause the in-kernel module loader to pull-in the module. Systems which never access the device node will not needlessly load the module, and no longer need init scripts or other facilities to unconditionally load it. Signed-off-by: Kay Sievers Signed-off-by: Dmitry Torokhov

dm: allow autoloading of dm mod

2010-08-12T03:14:05Z

Add devname:mapper/control and MAPPER_CTRL_MINOR module alias to support dm-mod module autoloading. Signed-off-by: Kay Sievers Signed-off-by: Peter Rajnoha Signed-off-by: Alasdair G Kergon