[patch 3/3] zfcp: add missing compat ptr conversion

[Christof Schmitt <christof.schmitt@de.ibm.com>]

[-- Attachment #1: 705-zfcp-compat-ptr.diff --]
[-- Type: text/plain, Size: 1151 bytes --]

From: Heiko Carstens <heiko.carstens@de.ibm.com>

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

 drivers/s390/scsi/zfcp_cfdc.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- a/drivers/s390/scsi/zfcp_cfdc.c	2010-01-13 17:41:07.000000000 +0100
+++ b/drivers/s390/scsi/zfcp_cfdc.c	2010-01-13 17:45:39.000000000 +0100
@@ -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(struc
 }
 
 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 f
 	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;