diff --git a/src/rfid_asic_rc632.c b/src/rfid_asic_rc632.c
index b9b1aff..f0948c6 100644
--- a/src/rfid_asic_rc632.c
+++ b/src/rfid_asic_rc632.c
@@ -297,7 +297,9 @@ static int rc632_wait_idle_timer(struct rfid_asic_handle *handle)
 		DEBUGP_STATUS_FLAG(stat);
 		if (stat & RC632_STAT_ERR) {
 			u_int8_t err;
-			rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
+			ret = rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
+			if (ret < 0) 
+				return ret;
 			DEBUGP_ERROR_FLAG(err);
 			if (err & (RC632_ERR_FLAG_COL_ERR |
 				   RC632_ERR_FLAG_PARITY_ERR |
@@ -457,14 +459,16 @@ rc632_transceive(struct rfid_asic_handle *handle,
 
 
 	ret = rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_IDLE);
+	if (ret < 0)
+		return ret;
 	/* clear all interrupts */
-	rc632_clear_spec_bits(handle, RC632_REG_INTERRUPT_RQ, RC632_INT_ALL);
+	ret = rc632_clear_spec_bits(handle, RC632_REG_INTERRUPT_RQ, RC632_INT_ALL);
+	if (ret < 0)
+		return ret;
 
 	{ u_int8_t tmp;
 	rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &tmp);
 	DEBUGP_STATUS_FLAG(tmp);
-	rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &tmp);
-	DEBUGP_STATUS_FLAG(tmp);
 	rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &tmp);
 	DEBUGP_ERROR_FLAG(tmp);
 	}