On 2023/11/4 0:45, Jason Gunthorpe wrote:
A perfect driver would only call dev_iommu_priv_set() from its probe callback. We've made it functionally correct to call it from the of_xlate by adding a lock around that call. lockdep assert that iommu_probe_device_lock is held to discourage misuse. Exclude PPC kernels with CONFIG_FSL_PAMU turned on because FSL_PAMU uses a global static for its priv and abuses priv for its domain. Remove the pointless stores of NULL, all these are on paths where the core code will free dev->iommu after the op returns. Signed-off-by: Jason Gunthorpe<jgg@xxxxxxxxxx> --- drivers/iommu/amd/iommu.c | 2 -- drivers/iommu/apple-dart.c | 1 - drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 - drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 - drivers/iommu/intel/iommu.c | 2 -- drivers/iommu/iommu.c | 9 +++++++++ drivers/iommu/omap-iommu.c | 1 - include/linux/iommu.h | 5 +---- 8 files changed, 10 insertions(+), 12 deletions(-)
Reviewed-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Best regards, baolu
