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Subject[PATCH] iommu: rockchip: Free domain on .domain_free
Date
IOMMU domain resource life is well-defined, managed
by .domain_alloc and .domain_free.

Therefore, domain-specific resources shouldn't be tied to
the device life, but instead to its domain.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
drivers/iommu/rockchip-iommu.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 26290f310f90..e845bd01a1a2 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -979,13 +979,13 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type)
if (!dma_dev)
return NULL;

- rk_domain = devm_kzalloc(dma_dev, sizeof(*rk_domain), GFP_KERNEL);
+ rk_domain = kzalloc(sizeof(*rk_domain), GFP_KERNEL);
if (!rk_domain)
return NULL;

if (type == IOMMU_DOMAIN_DMA &&
iommu_get_dma_cookie(&rk_domain->domain))
- return NULL;
+ goto err_free_domain;

/*
* rk32xx iommus use a 2 level pagetable.
@@ -1020,6 +1020,8 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type)
err_put_cookie:
if (type == IOMMU_DOMAIN_DMA)
iommu_put_dma_cookie(&rk_domain->domain);
+err_free_domain:
+ kfree(rk_domain);

return NULL;
}
@@ -1048,6 +1050,7 @@ static void rk_iommu_domain_free(struct iommu_domain *domain)

if (domain->type == IOMMU_DOMAIN_DMA)
iommu_put_dma_cookie(&rk_domain->domain);
+ kfree(rk_domain);
}

static int rk_iommu_add_device(struct device *dev)
--
2.22.0
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