lkml.org 
[lkml]   [2020]   [Jan]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.4 015/191] iommu: rockchip: Free domain on .domain_free
Date
From: Ezequiel Garcia <ezequiel@collabora.com>

[ 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@collabora.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 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)
--
2.20.1


\
 
 \ /
  Last update: 2020-01-02 23:12    [W:0.640 / U:3.480 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site