1 files changed, 2 insertions, 0 deletions
diff --git a/xpp/card_fxo.c b/xpp/card_fxo.c
index ec44756..404407f 100644
--- a/xpp/card_fxo.c
+++ b/xpp/card_fxo.c
@@ -592,6 +592,8 @@ static int FXO_card_ioctl(xpd_t *xpd, int pos, unsigned int cmd, unsigned long a
 	unsigned char		echotune_data[ARRAY_SIZE(echotune_regs)];
 
 	BUG_ON(!xpd);
+	if(!xpd->xbus->hardware_exists)
+		return -ENODEV;
 	switch (cmd) {
 		case WCTDM_SET_ECHOTUNE:
 			XPD_DBG(GENERAL, xpd, "-- Setting echo registers: \n");