From: David Schleef <ds@schleef.org>
Date: Wed, 15 May 2002 19:08:53 +0000 (+0000)
Subject: Added open/close hooks to device structure
X-Git-Tag: r0_7_65~45
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=9d8d0f236255459fd5738f651c5bae8789588ab6;p=comedi.git

Added open/close hooks to device structure
---

diff --git a/comedi/comedi_fops.c b/comedi/comedi_fops.c
index 2e23fe79..66e1a342 100644
--- a/comedi/comedi_fops.c
+++ b/comedi/comedi_fops.c
@@ -1618,6 +1618,11 @@ ok:
 	if(dev->attached && dev->driver->module){
 		__MOD_INC_USE_COUNT(dev->driver->module);
 	}
+
+	if(dev->attached && dev->use_count==0 && dev->open){
+		dev->open(dev);
+	}
+
 	dev->use_count++;
 
 	return 0;
@@ -1640,6 +1645,10 @@ static int comedi_close_v22(struct inode *inode,struct file *file)
 		}
 	}
 
+	if(dev->attached && dev->use_count==1 && dev->close){
+		dev->close(dev);
+	}
+
 	MOD_DEC_USE_COUNT;
 	if(dev->attached && dev->driver->module){
 		__MOD_DEC_USE_COUNT(dev->driver->module);
diff --git a/include/linux/comedidev.h b/include/linux/comedidev.h
index c468d5d5..715db327 100644
--- a/include/linux/comedidev.h
+++ b/include/linux/comedidev.h
@@ -206,6 +206,9 @@ struct comedi_device_struct{
 	wait_queue_head_t write_wait;
 
 	struct fasync_struct *async_queue;
+
+	void (*open)(comedi_device *dev);
+	void (*close)(comedi_device *dev);
 };