diff mbox series

[v5,6/6] iommu: Propagate return value in ->attach_dev callback functions

Message ID 8040df414a1d4bc007a25553b8341acf37ead670.1663836372.git.nicolinc@nvidia.com (mailing list archive)
State New, archived
Headers show
Series Define EINVAL as device/domain incompatibility | expand

Commit Message

Nicolin Chen Sept. 22, 2022, 8:54 a.m. UTC 
The mtk_iommu and virtio drivers have places in the ->attach_dev callback
functions that return hardcode errnos instead of the returned values, but
callers of these ->attach_dv callback functions may care. Propagate them
directly without the extra conversions.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 drivers/iommu/mtk_iommu.c    | 2 +-
 drivers/iommu/virtio-iommu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Comments

Jason Gunthorpe Sept. 22, 2022, 5:51 p.m. UTC | #1 
On Thu, Sep 22, 2022 at 01:54:45AM -0700, Nicolin Chen wrote:
> The mtk_iommu and virtio drivers have places in the ->attach_dev callback
> functions that return hardcode errnos instead of the returned values, but
> callers of these ->attach_dv callback functions may care. Propagate them
> directly without the extra conversions.
> 
> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
> ---
>  drivers/iommu/mtk_iommu.c    | 2 +-
>  drivers/iommu/virtio-iommu.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason
Yong Wu (吴勇) Sept. 23, 2022, 1:09 a.m. UTC | #2 
On Thu, 2022-09-22 at 01:54 -0700, Nicolin Chen wrote:
> The mtk_iommu and virtio drivers have places in the ->attach_dev
> callback
> functions that return hardcode errnos instead of the returned values,
> but
> callers of these ->attach_dv callback functions may care. Propagate
> them
> directly without the extra conversions.
> 
> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
> Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
> ---
>  drivers/iommu/mtk_iommu.c    | 2 +-
>  drivers/iommu/virtio-iommu.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 

Reviewed-by: Yong Wu <yong.wu@mediatek.com> #For mtk_iommu.c

Thanks.
diff mbox series

Patch

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index be1a7d1cc630..c30dc8f81778 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -666,7 +666,7 @@  static int mtk_iommu_attach_device(struct iommu_domain *domain,
 		ret = mtk_iommu_domain_finalise(dom, frstdata, region_id);
 		if (ret) {
 			mutex_unlock(&dom->mutex);
-			return -ENODEV;
+			return ret;
 		}
 		dom->bank = &data->bank[bankid];
 	}
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index 87128266b6e3..35de7b433b17 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -696,7 +696,7 @@  static int viommu_domain_finalise(struct viommu_endpoint *vdev,
 		if (ret) {
 			ida_free(&viommu->domain_ids, vdomain->id);
 			vdomain->viommu = NULL;
-			return -EOPNOTSUPP;
+			return ret;
 		}
 	}