diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-02 14:59:38 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-06 08:25:24 -0500 |
| commit | abb0f6a79fe8eba7982b73313b8623259d78c3f6 (patch) | |
| tree | 3eacfcd16860ed1edd9190a30a8670f5c4ea9266 | |
| parent | 820351f05be93623c6e71b5d618f90f0deebc134 (diff) | |
cdrom: don't open-code memdup_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | drivers/cdrom/cdrom.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index c206ccda899b..1b257ea9776a 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -3186,15 +3186,11 @@ static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi, if (!CDROM_CAN(CDC_DVD)) return -ENOSYS; - s = kmalloc(size, GFP_KERNEL); - if (!s) - return -ENOMEM; + s = memdup_user(arg, size); + if (IS_ERR(s)) + return PTR_ERR(s); cd_dbg(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n"); - if (copy_from_user(s, arg, size)) { - kfree(s); - return -EFAULT; - } ret = dvd_read_struct(cdi, s, cgc); if (ret) |