Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
irqdomain: Delete irq_domain_add_tree()
No in-tree users anymore.
[ tglx: Remove the reference in the Chinese documentation as well ]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://patch.msgid.link/20251202202327.1444693-1-andriy.shevchenko@linux.intel.com
authored by
Andy Shevchenko
and committed by
Thomas Gleixner
55026a96
89acaa55
-20
-4
Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
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Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
···
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如果hwirq号可以非常大，树状映射是一个很好的选择，因为它不需要分配一个和最大hwirq
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号一样大的表。 缺点是，hwirq到IRQ号的查找取决于表中有多少条目。
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irq_domain_add_tree()和irq_domain_create_tree()在功能上是等价的，除了第一
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个参数不同——前者接受一个Open Firmware特定的 'struct device_node' ，而后者接受
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一个更通用的抽象 'struct fwnode_handle' 。
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-
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很少有驱动应该需要这个映射。
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无映射
-16
include/linux/irqdomain.h
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include/linux/irqdomain.h
···
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}
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#endif
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static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
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const struct irq_domain_ops *ops,
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void *host_data)
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{
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struct irq_domain_info info = {
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.fwnode = of_fwnode_handle(of_node),
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.hwirq_max = ~0U,
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.ops = ops,
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.host_data = host_data,
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};
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struct irq_domain *d;
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d = irq_domain_instantiate(&info);
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return IS_ERR(d) ? NULL : d;
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}
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static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
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unsigned int size,
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const struct irq_domain_ops *ops,