NVMe: Set result from user admin command

The ioctl data structure includes space for the 'result' of the admin
command to be returned; it just wasn't filled in.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c
index af88635..47c8604 100644 (file)
--- a/drivers/block/nvme.c
+++ b/drivers/block/nvme.c
@@ -1237,12 +1237,17 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev,
        if (length != cmd.data_len)
                status = -ENOMEM;
        else
-               status = nvme_submit_admin_cmd(dev, &c, NULL);
+               status = nvme_submit_admin_cmd(dev, &c, &cmd.result);
 
        if (cmd.data_len) {
                nvme_unmap_user_pages(dev, cmd.opcode & 1, iod);
                nvme_free_iod(dev, iod);
        }
+
+       if (!status && copy_to_user(&ucmd->result, &cmd.result,
+                                                       sizeof(cmd.result)))
+               status = -EFAULT;
+
        return status;
 }