X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/05dd2640c82d97d88f0bcab5344630f24212836b..refs/heads/can-usb1:/lincan/src/close.c

diff --git a/lincan/src/close.c b/lincan/src/close.c
index a69247c..6a0ca6e 100644
--- a/lincan/src/close.c
+++ b/lincan/src/close.c
@@ -45,18 +45,24 @@
 int can_close(struct inode *inode, struct file *file)
 {
 	struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
+	struct canchip_t *chip;
 	struct canque_ends_t *qends;
 	struct msgobj_t *obj;
 	can_spin_irqflags_t iflags;
-	
+	int minor_nr = INODE2MINOR_NR(inode);
+
 	if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
 		CANMSG("can_close: bad canuser magic\n");
 		return -ENODEV;
 	}
-	
+	if ((chip=objects_p[minor_nr]->hostchip) == NULL) {
+		CANMSG("There is no hardware support for the device file with minor nr.: %d\n",minor_nr);
+		return -ENODEV;
+	}
+
 	obj = canuser->msgobj;
 	qends = canuser->qends;
-	
+
     #ifdef CAN_ENABLE_KERN_FASYNC
 
 	can_fasync(-1, file, 0);
@@ -76,9 +82,14 @@ int can_close(struct inode *inode, struct file *file)
 		can_msgobj_clear_fl(obj,OPENED);
 	};
 	can_spin_unlock_irqrestore(&canuser_manipulation_lock, iflags);
-	
+
     #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,50))
 	MOD_DEC_USE_COUNT;
     #endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
+	if (chip->hostdevice->hwspecops->release_device)
+		kref_put(&chip->hostdevice->refcount,chip->hostdevice->hwspecops->release_device);
+#endif
 	return 0;
 }