From 9d69b7d3d115d0db3ddd87f09e496db7ecf72650 Mon Sep 17 00:00:00 2001
From: Randy Dunlap <randy.dunlap@oracle.com>
Date: Wed, 6 Dec 2006 20:38:23 -0800
Subject: [PATCH] [PATCH] I2O: handle __copy_from_user

Handle __copy_from_user() return value.

Noticed by inspection, not from build warning.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/message/i2o/i2o_config.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
index 7d23e082bf26..685d7a450720 100644
--- a/drivers/message/i2o/i2o_config.c
+++ b/drivers/message/i2o/i2o_config.c
@@ -265,7 +265,11 @@ static int i2o_cfg_swdl(unsigned long arg)
 		return -ENOMEM;
 	}
 
-	__copy_from_user(buffer.virt, kxfer.buf, fragsize);
+	if (__copy_from_user(buffer.virt, kxfer.buf, fragsize)) {
+		i2o_msg_nop(c, msg);
+		i2o_dma_free(&c->pdev->dev, &buffer);
+		return -EFAULT;
+	}
 
 	msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
 	msg->u.head[1] =
-- 
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