This is a note to let you know that I've just added the patch titled iommu: rockchip: Free domain on .domain_free to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iommu-rockchip-free-domain-on-.domain_free.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 791f3660dea0ed4f039fae41875c664a7e3f0d22 Author: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> Date: Wed Oct 2 14:29:23 2019 -0300 iommu: rockchip: Free domain on .domain_free [ Upstream commit 42bb97b80f2e3bf592e3e99d109b67309aa1b30e ] 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@xxxxxxxxxxxxx> Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx> Acked-by: Heiko Stuebner <heiko@xxxxxxxxx> Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 4dcbf68dfda4..0df091934361 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -980,13 +980,13 @@ 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. @@ -1021,6 +1021,8 @@ err_free_dt: err_put_cookie: if (type == IOMMU_DOMAIN_DMA) iommu_put_dma_cookie(&rk_domain->domain); +err_free_domain: + kfree(rk_domain); return NULL; } @@ -1049,6 +1051,7 @@ 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)