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AST1150 PCI-to-PCI Bridge (rev 06) > 0008:07:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 52) > > Since SMMU driver had been already expecting a potential duplicated Stream > ID in arm_smmu_install_ste_for_dev(), change the arm_smmu_insert_master() > routine to ignore a duplicated ID from the fwspec->sids array as well. > > Note: this has been failing the iommu_device_probe() since 2021, although a > recent iommu commit in v6.15-rc1 that moves iommu_device_probe() started to > fail the SMMU driver probe. Since nobody has cared about DMA Alias support, > leave that as it was but fix the fundamental iommu_device_probe() breakage. > > Fixes: cdf315f907d4 ("iommu/arm-smmu-v3: Maintain a SID->device structure") > Cc: stable@vger.kernel.org > Suggested-by: Jason Gunthorpe > Signed-off-by: Nicolin Chen > --- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 19 +++++++++++++++---- > 1 file changed, 15 insertions(+), 4 deletions(-) Reviewed-by: Jason Gunthorpe This should go to rc as it has become urgent with the probe reorder. Use [PATCH rc] to idicate this.. Jason