From df3ef2d3c92c0a562ebde3699af7d12401fddf60 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Thu, 21 Apr 2011 07:20:16 +0000
Subject: mmc: protect the tmio_mmc driver against a theoretical race

The MMC subsystem does not guarantee, that host driver .request() and
.set_ios() callbacks are serialised. Such concurrent calls, however,
do not have to be meaningfully supported, drivers just have to make
sure to avoid any severe problems.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/tmio_mmc.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/mmc/host/tmio_mmc.h')

diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index c1470e6b138d..58138a203877 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -19,6 +19,7 @@
 #include <linux/highmem.h>
 #include <linux/mmc/tmio.h>
 #include <linux/pagemap.h>
+#include <linux/spinlock.h>
 
 /* Definitions for values the CTRL_SDIO_STATUS register can take. */
 #define TMIO_SDIO_STAT_IOIRQ	0x0001
-- 
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