diff mbox series

[v9,03/15] iommu/mediatek: Return ENODEV if the device is NULL

Message ID 20211112105509.12010-4-yong.wu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series Clean up "mediatek,larb" | expand

Commit Message

Yong Wu (吴勇) Nov. 12, 2021, 10:54 a.m. UTC
The platform device is created at:
of_platform_default_populate_init:  arch_initcall_sync
  ->of_platform_populate
        ->of_platform_device_create_pdata

When entering our probe, all the devices should be already created.
if it is null, means NODEV. Currently we don't get the fail case.
It's a minor fix, no need add fixes tags.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c    | 2 +-
 drivers/iommu/mtk_iommu_v1.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Comments

AngeloGioacchino Del Regno Jan. 11, 2022, 10:57 a.m. UTC | #1
Il 12/11/21 11:54, Yong Wu ha scritto:
> The platform device is created at:
> of_platform_default_populate_init:  arch_initcall_sync
>    ->of_platform_populate
>          ->of_platform_device_create_pdata
> 
> When entering our probe, all the devices should be already created.
> if it is null, means NODEV. Currently we don't get the fail case.
> It's a minor fix, no need add fixes tags.
> 
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff mbox series

Patch

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index d837adfd1da5..8f566d2e72e5 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -846,7 +846,7 @@  static int mtk_iommu_probe(struct platform_device *pdev)
 		plarbdev = of_find_device_by_node(larbnode);
 		if (!plarbdev) {
 			of_node_put(larbnode);
-			return -EPROBE_DEFER;
+			return -ENODEV;
 		}
 		data->larb_imu[id].dev = &plarbdev->dev;
 
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 1467ba1e4417..68bf02f87cfd 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -604,7 +604,7 @@  static int mtk_iommu_probe(struct platform_device *pdev)
 		plarbdev = of_find_device_by_node(larbnode);
 		if (!plarbdev) {
 			of_node_put(larbnode);
-			return -EPROBE_DEFER;
+			return -ENODEV;
 		}
 		data->larb_imu[i].dev = &plarbdev->dev;