X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/c3adf4f9af7ee68df8bb65fafa4dbcbdcc4895ba..fdf877c54ec2598864f6193e8e1fbaedb5c05efb:/lincan/src/close.c

diff --git a/lincan/src/close.c b/lincan/src/close.c
index a69247c..157acfa 100644
--- a/lincan/src/close.c
+++ b/lincan/src/close.c
@@ -45,6 +45,7 @@
 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;
@@ -53,6 +54,10 @@ int can_close(struct inode *inode, struct file *file)
 		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;
@@ -80,5 +85,10 @@ int can_close(struct inode *inode, struct file *file)
     #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;
 }