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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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19872d20c8
udev has this nice feature of creating "dead" /dev/<node> device-nodes if
it finds a devnode:<node> 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 578454ff7e
Author: Kay Sievers <kay.sievers@vrfy.org>
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 <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
#ifndef _LINUX_MISCDEVICE_H
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#define _LINUX_MISCDEVICE_H
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#include <linux/major.h>
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#include <linux/list.h>
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#include <linux/types.h>
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/*
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* These allocations are managed by device@lanana.org. If you use an
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* entry that is not in assigned your entry may well be moved and
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* reassigned, or set dynamic if a fixed value is not justified.
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*/
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#define PSMOUSE_MINOR 1
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#define MS_BUSMOUSE_MINOR 2
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#define ATIXL_BUSMOUSE_MINOR 3
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/*#define AMIGAMOUSE_MINOR 4 FIXME OBSOLETE */
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#define ATARIMOUSE_MINOR 5
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#define SUN_MOUSE_MINOR 6
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#define APOLLO_MOUSE_MINOR 7
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#define PC110PAD_MINOR 9
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/*#define ADB_MOUSE_MINOR 10 FIXME OBSOLETE */
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#define WATCHDOG_MINOR 130 /* Watchdog timer */
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#define TEMP_MINOR 131 /* Temperature Sensor */
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#define RTC_MINOR 135
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#define EFI_RTC_MINOR 136 /* EFI Time services */
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#define SUN_OPENPROM_MINOR 139
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#define DMAPI_MINOR 140 /* DMAPI */
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#define NVRAM_MINOR 144
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#define SGI_MMTIMER 153
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#define STORE_QUEUE_MINOR 155
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#define I2O_MINOR 166
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#define MICROCODE_MINOR 184
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#define TUN_MINOR 200
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#define MWAVE_MINOR 219 /* ACP/Mwave Modem */
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#define MPT_MINOR 220
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#define MPT2SAS_MINOR 221
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#define MPT3SAS_MINOR 222
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#define UINPUT_MINOR 223
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#define MISC_MCELOG_MINOR 227
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#define HPET_MINOR 228
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#define FUSE_MINOR 229
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#define KVM_MINOR 232
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#define BTRFS_MINOR 234
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#define AUTOFS_MINOR 235
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#define MAPPER_CTRL_MINOR 236
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#define LOOP_CTRL_MINOR 237
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#define VHOST_NET_MINOR 238
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#define UHID_MINOR 239
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#define MISC_DYNAMIC_MINOR 255
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struct device;
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struct miscdevice {
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int minor;
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const char *name;
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const struct file_operations *fops;
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struct list_head list;
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struct device *parent;
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struct device *this_device;
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const char *nodename;
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umode_t mode;
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};
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extern int misc_register(struct miscdevice * misc);
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extern int misc_deregister(struct miscdevice *misc);
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#define MODULE_ALIAS_MISCDEV(minor) \
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MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \
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"-" __stringify(minor))
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#endif
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