Re: [PATCH v2] irqdomain: Delete irq_domain_add_linear()

[Yanteng Si <si.yanteng@linux.dev>]

在 2026/9/1 15:32, Dongliang Mu 写道:
>
> On 9/1/26 3:04 PM, Jiri Slaby (SUSE) wrote:
>> 7.3-rc1 is free of calls to irq_domain_add_linear(), so it can be
>> deleted at last.
>>
>> According to Dongliang Mu, the paragraph in the Chinese docs is now
>> obsolete. So drop it completely.
>>
>> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
>> Cc: Thomas Gleixner <tglx@kernel.org>
>> Cc: Radu Rendec <radu@rendec.net>
>> Cc: Alex Shi <alexs@kernel.org>
>> Cc: Yanteng Si <si.yanteng@linux.dev>
>> Cc: Dongliang Mu <dzm91@hust.edu.cn>
>
> Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>

Reviewed-by: Yanteng Si <si.yanteng@linux.dev>


Thanks,

Yanteng

>
>>
>> ---
>> [v2] drop the whole paragraph (Dongliang Mu)
>> ---
>>   .../zh_CN/core-api/irq/irq-domain.rst          |  4 ----
>>   include/linux/irqdomain.h                      | 18 ------------------
>>   2 files changed, 22 deletions(-)
>>
>> diff --git 
>> a/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst 
>> b/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
>> index aaefeda0e164..7317cf5355c9 100644
>> --- a/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
>> +++ b/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
>> @@ -90,10 +90,6 @@ irq_domain映射的类型
>>   映射的优点是固定时间查找IRQ号，而且irq_descs只分配给在用的IRQ。 
>> 缺点是该表
>>   必须尽可能大的hwirq号。
>>   -irq_domain_add_linear()和irq_domain_create_linear()在功能上是等价的，
>> -除了第一个参数不同--前者接受一个Open Firmware特定的 'struct device_node' 
>> 而
>> -后者接受一个更通用的抽象 'struct fwnode_handle' 。
>> -
>>   大多数驱动应该使用线性映射
>>     树状映射
>> diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
>> index 73c25d40846c..3ba75a4ed3da 100644
>> --- a/include/linux/irqdomain.h
>> +++ b/include/linux/irqdomain.h
>> @@ -752,24 +752,6 @@ static inline void 
>> msi_device_domain_free_wired(struct irq_domain *domain, unsig
>>   }
>>   #endif
>>   -static inline struct irq_domain *irq_domain_add_linear(struct 
>> device_node *of_node,
>> -                               unsigned int size,
>> -                               const struct irq_domain_ops *ops,
>> -                               void *host_data)
>> -{
>> -    struct irq_domain_info info = {
>> -        .fwnode        = of_fwnode_handle(of_node),
>> -        .size        = size,
>> -        .hwirq_max    = size,
>> -        .ops        = ops,
>> -        .host_data    = host_data,
>> -    };
>> -    struct irq_domain *d;
>> -
>> -    d = irq_domain_instantiate(&info);
>> -    return IS_ERR(d) ? NULL : d;
>> -}
>> -
>>   #else /* CONFIG_IRQ_DOMAIN */
>>   static inline void irq_dispose_mapping(unsigned int virq) { }
>>   static inline struct irq_domain *irq_find_matching_fwnode(struct 
>> fwnode_handle *fwnode,
>