From: Miaoqian Lin <linmq006@xxxxxxxxx>
commit 9826e393e4a8c3df474e7f9eacd3087266f74005 upstream.
The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore.
Add the corresponding 'put_device()' in the error handling path.
Fixes: 765a9d1d02b2 ("iommu/tegra-smmu: Fix mc errors on tegra124-nyan")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Acked-by: Thierry Reding <treding@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220107080915.12686-1-linmq006@xxxxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iommu/tegra-smmu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -808,8 +808,10 @@ static struct tegra_smmu *tegra_smmu_fin
return NULL;
mc = platform_get_drvdata(pdev);
- if (!mc)
+ if (!mc) {
+ put_device(&pdev->dev);
return NULL;
+ }
return mc->smmu;
}
