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authorHeiko Carstens <heiko.carstens@de.ibm.com>2010-01-13 20:44:29 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-01-13 20:44:44 +0100
commit880348653ec2eda81550a8aa37c2eb625922f695 (patch)
tree9997fdf7f92a98a12b3dfbbe5b06409175e056e0 /drivers/s390
parentbebf023d415fd8984994a596aaa83cd0a3046d0b (diff)
[S390] dasd: add missing compat ptr conversion
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd_ioctl.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 478bcdb90b6..fc7b30b4a25 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -17,7 +17,7 @@
#include <linux/fs.h>
#include <linux/blkpg.h>
#include <linux/smp_lock.h>
-
+#include <asm/compat.h>
#include <asm/ccwdev.h>
#include <asm/cmb.h>
#include <asm/uaccess.h>
@@ -358,9 +358,8 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
}
static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd,
- unsigned long arg)
+ struct cmbdata __user *argp)
{
- struct cmbdata __user *argp = (void __user *) arg;
size_t size = _IOC_SIZE(cmd);
struct cmbdata data;
int ret;
@@ -376,7 +375,12 @@ dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct dasd_block *block = bdev->bd_disk->private_data;
- void __user *argp = (void __user *)arg;
+ void __user *argp;
+
+ if (is_compat_task())
+ argp = compat_ptr(arg);
+ else
+ argp = (void __user *)arg;
if (!block)
return -ENODEV;
@@ -414,7 +418,7 @@ dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
case BIODASDCMFDISABLE:
return disable_cmf(block->base->cdev);
case BIODASDREADALLCMB:
- return dasd_ioctl_readall_cmb(block, cmd, arg);
+ return dasd_ioctl_readall_cmb(block, cmd, argp);
default:
/* if the discipline has an ioctl method try it. */
if (block->base->discipline->ioctl) {