linux-kernel - Re: [PATCH] ACPI/IORT: Drop the unused @ops of iort_add_device

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Message-ID: <ae3a3b0e-ba0f-7ccc-7ddf-d0f0cf69a818@huawei.com>
Date:   Tue, 18 Aug 2020 14:29:36 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     Hanjun Guo <guohanjun@...wei.com>, <lorenzo.pieralisi@....com>,
        <sudeep.holla@....com>
CC:     <linux-acpi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <wanghaibin.wang@...wei.com>
Subject: Re: [PATCH] ACPI/IORT: Drop the unused @ops of
 iort_add_device_replay()

On 2020/8/18 11:49, Hanjun Guo wrote:
> On 2020/8/17 18:59, Zenghui Yu wrote:
>> Since commit d2e1a003af56 ("ACPI/IORT: Don't call iommu_ops->add_device
>> directly"), we use the IOMMU core API to replace a direct invoke of the
>> specified callback. The parameter @ops has therefore became unused. Let's
>> drop it.
>>
>> Signed-off-by: Zenghui Yu <yuzenghui@...wei.com>
>> ---
>>   drivers/acpi/arm64/iort.c | 8 +++-----
>>   1 file changed, 3 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
>> index ec782e4a0fe4..a0ece0e201b2 100644
>> --- a/drivers/acpi/arm64/iort.c
>> +++ b/drivers/acpi/arm64/iort.c
>> @@ -811,8 +811,7 @@ static inline const struct iommu_ops 
>> *iort_fwspec_iommu_ops(struct device *dev)
>>       return (fwspec && fwspec->ops) ? fwspec->ops : NULL;
>>   }
>> -static inline int iort_add_device_replay(const struct iommu_ops *ops,
>> -                     struct device *dev)
>> +static inline int iort_add_device_replay(struct device *dev)
>>   {
>>       int err = 0;
>> @@ -1072,7 +1071,7 @@ const struct iommu_ops 
>> *iort_iommu_configure_id(struct device *dev,
>>        */
>>       if (!err) {
>>           ops = iort_fwspec_iommu_ops(dev);
>> -        err = iort_add_device_replay(ops, dev);
>> +        err = iort_add_device_replay(dev);
>>       }
>>       /* Ignore all other errors apart from EPROBE_DEFER */
>> @@ -1089,8 +1088,7 @@ const struct iommu_ops 
>> *iort_iommu_configure_id(struct device *dev,
>>   #else
>>   static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct 
>> device *dev)
>>   { return NULL; }
>> -static inline int iort_add_device_replay(const struct iommu_ops *ops,
>> -                     struct device *dev)
>> +static inline int iort_add_device_replay(struct device *dev)
> 
> inline functions iort_fwspec_iommu_ops() and iort_add_device_replay()
> are not needed anymore after commit 8212688600ed ("ACPI/IORT: Fix build
> error when IOMMU_SUPPORT is disabled"), could you please add another
> patch to remove them as well?

Sure, I will remove them in v2. Thanks for the reminder.


Zenghui