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authorDavid Herrmann <dh.herrmann@gmail.com>2013-09-09 12:33:54 -0400
committerJiri Kosina <jkosina@suse.cz>2013-09-26 05:03:29 -0400
commit19872d20c890073c5207d9e02bb8f14d451a11eb (patch)
tree7f83152f8b341304cf4134fe85ab50d349d15ab1 /include
parent84fca9f38c5d646e95cdeef70e41cf15db549b95 (diff)
HID: uhid: allocate static minor
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 578454ff7eab61d13a26b568f99a89a2c9edc881 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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/miscdevice.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 09c2300ddb37..cb358355ef43 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -45,6 +45,7 @@
45#define MAPPER_CTRL_MINOR 236 45#define MAPPER_CTRL_MINOR 236
46#define LOOP_CTRL_MINOR 237 46#define LOOP_CTRL_MINOR 237
47#define VHOST_NET_MINOR 238 47#define VHOST_NET_MINOR 238
48#define UHID_MINOR 239
48#define MISC_DYNAMIC_MINOR 255 49#define MISC_DYNAMIC_MINOR 255
49 50
50struct device; 51struct device;