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The return > convention matches irq_domain_create_linear() (NULL on failure) so > existing callers can switch over without changing their error checks. > > Suggested-by: Frank Li > Signed-off-by: Zhipeng Wang > --- Reviewed-by: Frank Li > include/linux/irqdomain.h | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > > diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h > index 73c25d40846c..b6b360cb6525 100644 > --- a/include/linux/irqdomain.h > +++ b/include/linux/irqdomain.h > @@ -457,6 +457,36 @@ static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle * > return IS_ERR(d) ? NULL : d; > } > > +/** > + * devm_irq_domain_create_linear - Allocate and register a linear revmap > + * irq_domain tied to the device lifetime. > + * @dev: Device that owns the domain. The domain is removed via devres > + * when the device is unbound. > + * @fwnode: pointer to interrupt controller's FW node. > + * @size: Number of interrupts in the domain. > + * @ops: map/unmap domain callbacks > + * @host_data: Controller private data pointer > + * > + * Returns: Newly created irq_domain, or NULL on failure. > + */ > +static inline struct irq_domain *devm_irq_domain_create_linear(struct device *dev, > + struct fwnode_handle *fwnode, > + unsigned int size, > + const struct irq_domain_ops *ops, > + void *host_data) > +{ > + const struct irq_domain_info info = { > + .fwnode = fwnode, > + .size = size, > + .hwirq_max = size, > + .ops = ops, > + .host_data = host_data, > + }; > + struct irq_domain *d = devm_irq_domain_instantiate(dev, &info); > + > + return IS_ERR(d) ? NULL : d; > +} > + > static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, > const struct irq_domain_ops *ops, > void *host_data) > -- > 2.34.1 > >