[PATCH v2] Return the result from user admin command IOCTL even in case of failure

[Chayan Biswas]

We copy the result to user if the command is completed from the
controller even if it completes with failure (non-zero) status.
A return status of < 0 indicates the command was not completed
by the controller. The user application may expect the error code
in the result field in case of failure.


Signed-off-by: Chayan Biswas <Chayan.Biswas at sandisk.com>
---
 drivers/block/nvme-core.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 42abf72..8493708 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -1439,7 +1439,7 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev,
                nvme_free_iod(dev, iod);
        }

-       if (!status && copy_to_user(&ucmd->result, &cmd.result,
+       if ((status >= 0) && copy_to_user(&ucmd->result, &cmd.result,
                                                        sizeof(cmd.result)))
                status = -EFAULT;

--
1.7.1


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