From 027e1f38459888c6641a66063bfd203493c35dd4 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Sat, 18 Jan 2014 09:16:20 +0000
Subject: [PATCH] Fixed bug #458.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@6630 35acf78f-673a-0410-8e92-d51de3d6d3f4
---
 os/hal/platforms/STM32/sdc_lld.c | 8 ++++----
 readme.txt                       | 2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/os/hal/platforms/STM32/sdc_lld.c b/os/hal/platforms/STM32/sdc_lld.c
index 69873d5f0..0ad164235 100644
--- a/os/hal/platforms/STM32/sdc_lld.c
+++ b/os/hal/platforms/STM32/sdc_lld.c
@@ -618,16 +618,16 @@ bool_t sdc_lld_read_aligned(SDCDriver *sdcp, uint32_t startblk,
                 SDIO_MASK_DATAENDIE;
   SDIO->DLEN  = n * MMCSD_BLOCK_SIZE;
 
-  /* Talk to card what we want from it.*/
-  if (sdc_lld_prepare_read(sdcp, startblk, n, resp) == TRUE)
-    goto error;
-
   /* Transaction starts just after DTEN bit setting.*/
   SDIO->DCTRL = SDIO_DCTRL_DTDIR |
                 SDIO_DCTRL_DBLOCKSIZE_3 |
                 SDIO_DCTRL_DBLOCKSIZE_0 |
                 SDIO_DCTRL_DMAEN |
                 SDIO_DCTRL_DTEN;
+
+  /* Talk to card what we want from it.*/
+  if (sdc_lld_prepare_read(sdcp, startblk, n, resp) == TRUE)
+    goto error;
   if (sdc_lld_wait_transaction_end(sdcp, n, resp) == TRUE)
     goto error;
 
diff --git a/readme.txt b/readme.txt
index f94a041a0..da17204b0 100644
--- a/readme.txt
+++ b/readme.txt
@@ -89,6 +89,8 @@
 *****************************************************************************
 
 *** 2.7.0 ***
+- FIX: Fixed race condition in STM32 SDC driver (bug #458)(backported
+  to 2.6.3).
 - FIX: Fixed race condition in STM32 OTG driver (bug #457)(backported
   to 2.6.3).
 - FIX: Fixed memstreams.c missing from simulator makefiles (bug #454)