diff --git a/Documentation/cdrom/cdrom-standard.rst b/Documentation/cdrom/cdrom-standard.rst
index 6c1303cff159e16daba2bf7c9a5fe8b72a3ebcad..b97a4e9b9bd38344b4a121c0c84ecc127c6e989f 100644
--- a/Documentation/cdrom/cdrom-standard.rst
+++ b/Documentation/cdrom/cdrom-standard.rst
@@ -273,7 +273,6 @@ The drive-specific, minor-like information that is registered with
 	__u8 media_written;			/*  dirty flag, DVD+RW bookkeeping */
 	unsigned short mmc3_profile;		/*  current MMC3 profile */
 	int for_data;				/*  unknown:TBD */
-	int (*exit)(struct cdrom_device_info *);/*  unknown:TBD */
 	int mrw_mode_page;			/*  which MRW mode page is in use */
   };
 
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 54b80911f3e286804edbd8cb5da54b42070ce5d0..f2530873ee292dbfc765372b170638cef6ef0941 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -624,9 +624,6 @@ int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi)
 	if (check_media_type == 1)
 		cdi->options |= (int) CDO_CHECK_TYPE;
 
-	if (CDROM_CAN(CDC_MRW_W))
-		cdi->exit = cdrom_mrw_exit;
-
 	if (cdi->ops->read_cdda_bpc)
 		cdi->cdda_method = CDDA_BPC_FULL;
 	else
@@ -651,9 +648,6 @@ void unregister_cdrom(struct cdrom_device_info *cdi)
 	list_del(&cdi->list);
 	mutex_unlock(&cdrom_mutex);
 
-	if (cdi->exit)
-		cdi->exit(cdi);
-
 	cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
 }
 EXPORT_SYMBOL(unregister_cdrom);
@@ -1264,6 +1258,8 @@ void cdrom_release(struct cdrom_device_info *cdi)
 		cd_dbg(CD_CLOSE, "Use count for \"/dev/%s\" now zero\n",
 		       cdi->name);
 		cdrom_dvd_rw_close_write(cdi);
+		if (CDROM_CAN(CDC_MRW_W))
+			cdrom_mrw_exit(cdi);
 
 		if ((cdo->capability & CDC_LOCK) && !cdi->keeplocked) {
 			cd_dbg(CD_CLOSE, "Unlocking door!\n");
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index fdfb61ccf55aef23721aa8dbcd52161a1b9e1c90..b907e6c2307d8516ddf93411a18c7d031c0f98cb 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -62,7 +62,6 @@ struct cdrom_device_info {
 	__u8 last_sense;
 	__u8 media_written;		/* dirty flag, DVD+RW bookkeeping */
 	unsigned short mmc3_profile;	/* current MMC3 profile */
-	int (*exit)(struct cdrom_device_info *);
 	int mrw_mode_page;
 	bool opened_for_data;
 	__s64 last_media_change_ms;