iommu/arm-smmu-v3: Stop pre-zeroing batch commands in arm_smmu_atc_inv_master()
Pre-zeroing the batched commands structure is inefficient, as individual commands are zeroed later in arm_smmu_cmdq_build_cmd(). Therefore, only the member 'num' needs to be initialized to 0. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Link: https://lore.kernel.org/r/20210817113411.1962-1-thunder.leizhen@huawei.com Signed-off-by: Will Deacon <will@kernel.org>
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@ -1764,10 +1764,11 @@ static int arm_smmu_atc_inv_master(struct arm_smmu_master *master)
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{
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int i;
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struct arm_smmu_cmdq_ent cmd;
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struct arm_smmu_cmdq_batch cmds = {};
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struct arm_smmu_cmdq_batch cmds;
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arm_smmu_atc_inv_to_cmd(0, 0, 0, &cmd);
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cmds.num = 0;
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for (i = 0; i < master->num_streams; i++) {
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cmd.atc.sid = master->streams[i].id;
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arm_smmu_cmdq_batch_add(master->smmu, &cmds, &cmd);
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