svn commit: r325296 - head/sys/dev/evdev

[Vladimir Kondratyev]

Author: wulf
Date: Wed Nov  1 22:19:19 2017
New Revision: 325296
URL: https://svnweb.freebsd.org/changeset/base/325296

Log:
  evdev: Take driver's lock in cdev write handler if necessary
  
  Reviewed by:		gonzo
  Approved by:		gonzo (mentor)
  MFC after:		2 weeks
  Differential Revision:	https://reviews.freebsd.org/D12676

Modified:
  head/sys/dev/evdev/evdev.c

Modified: head/sys/dev/evdev/evdev.c
==============================================================================
--- head/sys/dev/evdev/evdev.c	Wed Nov  1 22:15:19 2017	(r325295)
+++ head/sys/dev/evdev/evdev.c	Wed Nov  1 22:19:19 2017	(r325296)
@@ -813,7 +813,11 @@ evdev_inject_event(struct evdev_dev *evdev, uint16_t t
 	case EV_ABS:
 	case EV_SW:
 push:
+		if (evdev->ev_lock_type != EV_LOCK_INTERNAL)
+			EVDEV_LOCK(evdev);
 		ret = evdev_push_event(evdev, type,  code, value);
+		if (evdev->ev_lock_type != EV_LOCK_INTERNAL)
+			EVDEV_UNLOCK(evdev);
 		break;
 
 	default: