diff options
| author | Simon Xue <xxm@rock-chips.com> | 2025-06-23 10:00:18 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-10 16:05:12 +0200 |
| commit | 53892dc6869388d0378c36ad31c9c3d8320d3f80 (patch) | |
| tree | e44bd641c3a463e45bc09eab831f8f6b760da9ab /include/net/aligned_data.h | |
| parent | 5f28563f0c6862c99eb115c918421d9b73f137ad (diff) | |
iommu/rockchip: prevent iommus dead loop when two masters share one IOMMU
commit 62e062a29ad5133f67c20b333ba0a952a99161ae upstream.
When two masters share an IOMMU, calling ops->of_xlate during
the second master's driver init may overwrite iommu->domain set
by the first. This causes the check if (iommu->domain == domain)
in rk_iommu_attach_device() to fail, resulting in the same
iommu->node being added twice to &rk_domain->iommus, which can
lead to an infinite loop in subsequent &rk_domain->iommus operations.
Cc: <stable@vger.kernel.org>
Fixes: 25c2325575cc ("iommu/rockchip: Add missing set_platform_dma_ops callback")
Signed-off-by: Simon Xue <xxm@rock-chips.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20250623020018.584802-1-xxm@rock-chips.com
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions