From 1b676f70c108cda90cf9d114d16c677584400efc Mon Sep 17 00:00:00 2001
From: Per Forlin <per.forlin@linaro.org>
Date: Fri, 19 Aug 2011 14:52:37 +0200
Subject: mmc: core: add random fault injection

This adds support to inject data errors after a completed host transfer.
The mmc core will return error even though the host transfer is successful.
This simple fault injection proved to be very useful to test the
non-blocking error handling in the mmc_blk_issue_rw_rq().
Random faults can also test how the host driver handles pre_req()
and post_req() in case of errors.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 include/linux/mmc/host.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'include/linux/mmc/host.h')

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 1d09562ccf73..4c4bddf5ef61 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -12,6 +12,7 @@
 
 #include <linux/leds.h>
 #include <linux/sched.h>
+#include <linux/fault-inject.h>
 
 #include <linux/mmc/core.h>
 #include <linux/mmc/pm.h>
@@ -302,6 +303,10 @@ struct mmc_host {
 
 	struct mmc_async_req	*areq;		/* active async req */
 
+#ifdef CONFIG_FAIL_MMC_REQUEST
+	struct fault_attr	fail_mmc_request;
+#endif
+
 	unsigned long		private[0] ____cacheline_aligned;
 };
 
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