[PATCH 2/3] scsi_ioctl.c: switch SCSI_IOCTL_GET_IDLUN to copy_to_user()

[Al Viro]

From: Al Viro <v...@zeniv.linux.org.uk>

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
 drivers/scsi/scsi_ioctl.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c
index 8f3af87b6bb0..45d04b7b2643 100644
--- a/drivers/scsi/scsi_ioctl.c
+++ b/drivers/scsi/scsi_ioctl.c
@@ -211,18 +211,18 @@ static int scsi_ioctl_common(struct scsi_device *sdev, 
int cmd, void __user *arg
        }
 
        switch (cmd) {
-       case SCSI_IOCTL_GET_IDLUN:
-               if (!access_ok(arg, sizeof(struct scsi_idlun)))
+       case SCSI_IOCTL_GET_IDLUN: {
+               struct scsi_idlun v = {
+                       .dev_id = (sdev->id & 0xff)
+                                + ((sdev->lun & 0xff) << 8)
+                                + ((sdev->channel & 0xff) << 16)
+                                + ((sdev->host->host_no & 0xff) << 24),
+                       .host_unique_id = sdev->host->unique_id
+               };
+               if (copy_to_user(arg, &v, sizeof(struct scsi_idlun)))
                        return -EFAULT;
-
-               __put_user((sdev->id & 0xff)
-                        + ((sdev->lun & 0xff) << 8)
-                        + ((sdev->channel & 0xff) << 16)
-                        + ((sdev->host->host_no & 0xff) << 24),
-                        &((struct scsi_idlun __user *)arg)->dev_id);
-               __put_user(sdev->host->unique_id,
-                        &((struct scsi_idlun __user *)arg)->host_unique_id);
                return 0;
+       }
        case SCSI_IOCTL_GET_BUS_NUMBER:
                return put_user(sdev->host->host_no, (int __user *)arg);
        case SCSI_IOCTL_PROBE_HOST:
-- 
2.11.0