From da39fb4c0df01494f59e8d2c40225edcd2f138b8 Mon Sep 17 00:00:00 2001
From: Ralph Metzler <rjkm@metzlerbros.de>
Date: Thu, 14 Mar 2019 12:45:30 +0100
Subject: [PATCH] add acheck for PCIe link lost in case of MCI timeout

---
 ddbridge/ddbridge-mci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ddbridge/ddbridge-mci.c b/ddbridge/ddbridge-mci.c
index dec7861..d7b968f 100644
--- a/ddbridge/ddbridge-mci.c
+++ b/ddbridge/ddbridge-mci.c
@@ -84,6 +84,9 @@ static int ddb_mci_cmd_raw_unlocked(struct mci *state,
 	stat = wait_for_completion_timeout(&state->base->completion, HZ);
 	if (stat == 0) {
 		printk("MCI timeout\n");
+		val = ddblreadl(link, MCI_CONTROL);
+		if (val == 0xffffffff)
+			printk("Lost PCIe link!\n");
 		return -EIO;
 	}
 	if (res && res_len)