From: Yu Kuai yukuai3@huawei.com
[ Upstream commit 1a26044954a6d1f4d375d5e62392446af663be7a ]
if of_find_device_by_node() succeed, exynos_iommu_of_xlate() doesn't have a corresponding put_device(). Thus add put_device() to fix the exception handling for this function implementation.
Fixes: aa759fd376fb ("iommu/exynos: Add callback for initializing devices from device tree") Signed-off-by: Yu Kuai yukuai3@huawei.com Acked-by: Marek Szyprowski m.szyprowski@samsung.com Link: https://lore.kernel.org/r/20200918011335.909141-1-yukuai3@huawei.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/exynos-iommu.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 60c8a56e4a3f8..89f628da148ac 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1295,13 +1295,17 @@ static int exynos_iommu_of_xlate(struct device *dev, return -ENODEV;
data = platform_get_drvdata(sysmmu); - if (!data) + if (!data) { + put_device(&sysmmu->dev); return -ENODEV; + }
if (!owner) { owner = kzalloc(sizeof(*owner), GFP_KERNEL); - if (!owner) + if (!owner) { + put_device(&sysmmu->dev); return -ENOMEM; + }
INIT_LIST_HEAD(&owner->controllers); mutex_init(&owner->rpm_lock);