[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 (file)
--- 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;