From 882da041779be598d909cbd5601be7022dd0e1f0 Mon Sep 17 00:00:00 2001
From: rjkm <rjkm@rjkm.de>
Date: Wed, 23 Apr 2025 00:58:08 +0200
Subject: [PATCH] clear unused part of mci struct

---
 ddbridge/ddbridge-mci.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ddbridge/ddbridge-mci.c b/ddbridge/ddbridge-mci.c
index f05deed..9e91209 100644
--- a/ddbridge/ddbridge-mci.c
+++ b/ddbridge/ddbridge-mci.c
@@ -92,9 +92,12 @@ static int ddb_mci_cmd_raw_unlocked(struct ddb_link *link,
 	val = ddblreadl(link, control);
 	if (val & (MCI_CONTROL_RESET | MCI_CONTROL_START_COMMAND))
 		return -EIO;
-	if (cmd && cmd_len)
+	if (cmd && cmd_len) {
 		for (i = 0; i < cmd_len; i++)
 			ddblwritel(link, cmd[i], command + i * 4);
+		for (; i < sizeof(struct mci_command) / 4; i++)
+			ddblwritel(link, 0, command + i * 4);
+	}
 	val |= (MCI_CONTROL_START_COMMAND |
 		MCI_CONTROL_ENABLE_DONE_INTERRUPT);
 	ddblwritel(link, val, control);