From 4e25fcc11e9c845ffdfda392e4e1d4b94784c4a6 Mon Sep 17 00:00:00 2001
From: "munkyu.im" <munkyu.im@samsung.com>
Date: Tue, 17 May 2011 17:27:08 +0900
Subject: [PATCH] sd: Don't complain about SDIO commands CMD52/CMD53 52, 53
 commands are new command of SPIO spec.

---
 hw/sd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hw/sd.c b/hw/sd.c
index 5e29752..0b90232 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -1103,6 +1103,18 @@ static sd_rsp_type_t sd_normal_command(SDState *sd,
             break;
         }
         break;
+   
+	case 52:
+    case 53:
+        /* CMD52, CMD53: reserved for SDIO cards
+         * (see the SDIO Simplified Specification V2.0)
+         * Handle as illegal command but do not complain
+         * on stderr, as some OSes may use these in their
+         * probing for presence of an SDIO card.
+         */
+        sd->card_status |= ILLEGAL_COMMAND;
+        return sd_r0;
+
 
     /* Application specific commands (Class 8) */
     case 55:	/* CMD55:  APP_CMD */
-- 
2.7.4