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

[Yanteng Si]

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@xxxxxxxxxx>
> > Cc: Thomas Gleixner <tglx@xxxxxxxxxx>
> > Cc: Radu Rendec <radu@xxxxxxxxxx>
> > Cc: Alex Shi <alexs@xxxxxxxxxx>
> > Cc: Yanteng Si <si.yanteng@xxxxxxxxx>
> > Cc: Dongliang Mu <dzm91@xxxxxxxxxxx>
>
> Reviewed-by: Dongliang Mu <dzm91@xxxxxxxxxxx>

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


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,