From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 13 Jan 2010 16:52:38 +0000 (+0100)
Subject: [SCSI] zfcp: add missing compat ptr conversion
X-Git-Tag: upstream/snapshot3+hdmi~15587^2~162
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9e2ab1fabdbd88669fdebd368fb5cda32ad5438d;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[SCSI] zfcp: add missing compat ptr conversion

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
index f932400..0eb6eef 100644
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -12,6 +12,7 @@
 
 #include <linux/types.h>
 #include <linux/miscdevice.h>
+#include <asm/compat.h>
 #include <asm/ccwdev.h>
 #include "zfcp_def.h"
 #include "zfcp_ext.h"
@@ -163,7 +164,7 @@ static void zfcp_cfdc_req_to_sense(struct zfcp_cfdc_data *data,
 }
 
 static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
-				unsigned long buffer)
+				unsigned long arg)
 {
 	struct zfcp_cfdc_data *data;
 	struct zfcp_cfdc_data __user *data_user;
@@ -175,7 +176,11 @@ static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
 	if (command != ZFCP_CFDC_IOC)
 		return -ENOTTY;
 
-	data_user = (void __user *) buffer;
+	if (is_compat_task())
+		data_user = compat_ptr(arg);
+	else
+		data_user = (void __user *)arg;
+
 	if (!data_user)
 		return -EINVAL;