From: Miaoqian Lin linmq006@gmail.com
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@gmail.com Acked-by: Thierry Reding treding@nvidia.com Link: https://lore.kernel.org/r/20220107080915.12686-1-linmq006@gmail.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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; }