winesync: Reserve a minor device number and ioctl range

xanmod · May 30, 2022 · 456414a · 456414a
1 parent 2946fd9
commit 456414a
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Showing 4 changed files with 7 additions and 2 deletions.
diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt
@@ -376,8 +376,9 @@
 		240 = /dev/userio	Serio driver testing device
 		241 = /dev/vhost-vsock	Host kernel driver for virtio vsock
 		242 = /dev/rfkill	Turning off radio transmissions (rfkill)
+		243 = /dev/winesync	Wine synchronization primitive device
 
-		243-254			Reserved for local use
+		244-254			Reserved for local use
 		255			Reserved for MISC_DYNAMIC_MINOR
 
   11 char	Raw keyboard device	(Linux/SPARC only)

diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -375,6 +375,8 @@ Code  Seq#    Include File                                           Comments
                                                                      <mailto:thomas@winischhofer.net>
 0xF6  all                                                            LTTng Linux Trace Toolkit Next Generation
                                                                      <mailto:mathieu.desnoyers@efficios.com>
+0xF7  00-0F  uapi/linux/winesync.h                                   Wine synchronization primitives
+                                                                     <mailto:wine-devel@winehq.org>
 0xF8  all    arch/x86/include/uapi/asm/amd_hsmp.h                    AMD HSMP EPYC system management interface driver
                                                                      <mailto:nchatrad@amd.com>
 0xFD  all    linux/dm-ioctl.h

diff --git a/drivers/misc/winesync.c b/drivers/misc/winesync.c
@@ -40,7 +40,7 @@ static const struct file_operations winesync_fops = {
 };
 
 static struct miscdevice winesync_misc = {
-	.minor		= MISC_DYNAMIC_MINOR,
+	.minor		= WINESYNC_MINOR,
 	.name		= WINESYNC_NAME,
 	.fops		= &winesync_fops,
 };
@@ -62,3 +62,4 @@ MODULE_AUTHOR("Zebediah Figura");
 MODULE_DESCRIPTION("Kernel driver for Wine synchronization primitives");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("devname:" WINESYNC_NAME);
+MODULE_ALIAS_MISCDEV(WINESYNC_MINOR);
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
@@ -71,6 +71,7 @@
 #define USERIO_MINOR		240
 #define VHOST_VSOCK_MINOR	241
 #define RFKILL_MINOR		242
+#define WINESYNC_MINOR		243
 #define MISC_DYNAMIC_MINOR	255
 
 struct device;