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From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Stephen Boyd <swboyd@chromium.org>
Cc: Rajendra Nayak <rnayak@codeaurora.org>,
	Robin Murphy <robin.murphy@arm.com>,
	linux-kernel@vger.kernel.org, bjorn.andersson@linaro.org,
	iommu@lists.linux-foundation.org, Andy Gross <agross@kernel.org>,
	linux-arm-msm@vger.kernel.org, Will Deacon <will@kernel.org>,
	linux-arm-msm-owner@vger.kernel.org
Subject: Re: [PATCHv6 3/3] iommu: arm-smmu-impl: Add sdm845 implementation hook
Date: Thu, 19 Sep 2019 08:43:13 +0530
Message-ID: <68913df77d45fc70f7cf475bfd0f558a@codeaurora.org> (raw)
In-Reply-To: <5d82d294.1c69fb81.23c8c.8c61@mx.google.com>

On 2019-09-19 06:27, Stephen Boyd wrote:
> Quoting Sai Prakash Ranjan (2019-09-17 02:45:04)
>> diff --git a/drivers/iommu/arm-smmu-impl.c 
>> b/drivers/iommu/arm-smmu-impl.c
>> index 3f88cd078dd5..d62da270f430 100644
>> --- a/drivers/iommu/arm-smmu-impl.c
>> +++ b/drivers/iommu/arm-smmu-impl.c
>> @@ -9,7 +9,6 @@
>> 
>>  #include "arm-smmu.h"
>> 
>> -
>>  static int arm_smmu_gr0_ns(int offset)
>>  {
>>         switch(offset) {
> 
> Why is this hunk still around?

I remember correcting this in previous version but somehow slipped in 
this version. Will correct it.

> 
>> diff --git a/drivers/iommu/arm-smmu-qcom.c 
>> b/drivers/iommu/arm-smmu-qcom.c
>> new file mode 100644
>> index 000000000000..24c071c1d8b0
>> --- /dev/null
>> +++ b/drivers/iommu/arm-smmu-qcom.c
>> @@ -0,0 +1,51 @@
> [...]
>> +struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device 
>> *smmu)
>> +{
>> +       struct qcom_smmu *qsmmu;
>> +
>> +       qsmmu = devm_kzalloc(smmu->dev, sizeof(*qsmmu), GFP_KERNEL);
>> +       if (!qsmmu)
>> +               return ERR_PTR(-ENOMEM);
>> +
>> +       qsmmu->smmu = *smmu;
>> +
>> +       qsmmu->smmu.impl = &qcom_smmu_impl;
>> +       devm_kfree(smmu->dev, smmu);
> 
> This copy is interesting but OK I guess cavium does it.
> 

This is from nvidia impl since Robin pointed me at its implementation.

>> +
>> +       return &qsmmu->smmu;
>> +}

Thanks,
Sai

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Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-17  9:45 [PATCHv6 0/3] QCOM smmu-500 wait-for-safe handling for sdm845 Sai Prakash Ranjan
2019-09-17  9:45 ` [PATCHv6 1/3] firmware: qcom_scm-64: Add atomic version of qcom_scm_call Sai Prakash Ranjan
2019-09-19  0:50   ` Stephen Boyd
2019-09-17  9:45 ` [PATCHv6 2/3] firmware/qcom_scm: Add scm call to handle smmu errata Sai Prakash Ranjan
2019-09-19  0:53   ` Stephen Boyd
2019-09-17  9:45 ` [PATCHv6 3/3] iommu: arm-smmu-impl: Add sdm845 implementation hook Sai Prakash Ranjan
2019-09-19  0:25   ` Bjorn Andersson
2019-09-19  0:52     ` Stephen Boyd
2019-09-19  3:18     ` Sai Prakash Ranjan
2019-09-19 18:54       ` Sai Prakash Ranjan
2019-09-19 20:00         ` Stephen Boyd
2019-09-20  7:54           ` Sai Prakash Ranjan
2019-09-19  0:57   ` Stephen Boyd
2019-09-19  3:13     ` Sai Prakash Ranjan [this message]

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