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-rw-r--r--drivers/s390/block/dasd.c1
-rw-r--r--drivers/s390/block/dasd_int.h1
-rw-r--r--drivers/s390/block/dasd_ioctl.c12
3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 2472fa1a1be..9c25654b1e7 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1751,6 +1751,7 @@ dasd_device_operations = {
.open = dasd_open,
.release = dasd_release,
.ioctl = dasd_ioctl,
+ .compat_ioctl = dasd_compat_ioctl,
.getgeo = dasd_getgeo,
};
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 2fb05c4a528..e4b401500b0 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -527,6 +527,7 @@ void dasd_ioctl_exit(void);
int dasd_ioctl_no_register(struct module *, int, dasd_ioctl_fn_t);
int dasd_ioctl_no_unregister(struct module *, int, dasd_ioctl_fn_t);
int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long dasd_compat_ioctl(struct file *, unsigned int, unsigned long);
/* externals in dasd_proc.c */
int dasd_proc_init(void);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 8e4dcd58599..9396fcacb8f 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -118,6 +118,18 @@ dasd_ioctl(struct inode *inp, struct file *filp,
return -EINVAL;
}
+long
+dasd_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ int rval;
+
+ lock_kernel();
+ rval = dasd_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
+ unlock_kernel();
+
+ return (rval == -EINVAL) ? -ENOIOCTLCMD : rval;
+}
+
static int
dasd_ioctl_api_version(struct block_device *bdev, int no, long args)
{