mtd: Fix pointer handling in compat ioctls to use compat_ptr()
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 5fff04f..5b081cb 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -839,7 +839,7 @@
struct inode *inode = file->f_path.dentry->d_inode;
struct mtd_file_info *mfi = file->private_data;
struct mtd_info *mtd = mfi->mtd;
- void __user *argp = (void __user *)arg;
+ void __user *argp = compat_ptr(arg);
int ret = 0;
lock_kernel();
@@ -874,7 +874,7 @@
break;
}
default:
- ret = mtd_ioctl(inode, file, cmd, arg);
+ ret = mtd_ioctl(inode, file, cmd, (unsigned long)argp);
}
unlock_kernel();