forked from mirrors/linux
8c0381f55b
When commit1852ebd135("of: irq: make a stub for of_irq_parse_one()") added a stub for of_irq_parse_one() it set the return value to 0. Return value of 0 in this instance means the call succeeded and the out_irq pointer was filled with valid data. So, fix it to return an error value. Fixes:1852ebd135("of: irq: make a stub for of_irq_parse_one()") Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20210210200050.4106032-1-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __OF_IRQ_H
|
|
#define __OF_IRQ_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/irqdomain.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/of.h>
|
|
|
|
typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
|
|
|
|
/*
|
|
* Workarounds only applied to 32bit powermac machines
|
|
*/
|
|
#define OF_IMAP_OLDWORLD_MAC 0x00000001
|
|
#define OF_IMAP_NO_PHANDLE 0x00000002
|
|
|
|
#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
|
|
extern unsigned int of_irq_workarounds;
|
|
extern struct device_node *of_irq_dflt_pic;
|
|
extern int of_irq_parse_oldworld(struct device_node *device, int index,
|
|
struct of_phandle_args *out_irq);
|
|
#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
|
|
#define of_irq_workarounds (0)
|
|
#define of_irq_dflt_pic (NULL)
|
|
static inline int of_irq_parse_oldworld(struct device_node *device, int index,
|
|
struct of_phandle_args *out_irq)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
|
|
|
|
extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
|
|
extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
|
|
extern int of_irq_to_resource(struct device_node *dev, int index,
|
|
struct resource *r);
|
|
|
|
extern void of_irq_init(const struct of_device_id *matches);
|
|
|
|
#ifdef CONFIG_OF_IRQ
|
|
extern int of_irq_parse_one(struct device_node *device, int index,
|
|
struct of_phandle_args *out_irq);
|
|
extern int of_irq_count(struct device_node *dev);
|
|
extern int of_irq_get(struct device_node *dev, int index);
|
|
extern int of_irq_get_byname(struct device_node *dev, const char *name);
|
|
extern int of_irq_to_resource_table(struct device_node *dev,
|
|
struct resource *res, int nr_irqs);
|
|
extern struct device_node *of_irq_find_parent(struct device_node *child);
|
|
extern struct irq_domain *of_msi_get_domain(struct device *dev,
|
|
struct device_node *np,
|
|
enum irq_domain_bus_token token);
|
|
extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
|
|
u32 id,
|
|
u32 bus_token);
|
|
extern void of_msi_configure(struct device *dev, struct device_node *np);
|
|
u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in);
|
|
#else
|
|
static inline int of_irq_parse_one(struct device_node *device, int index,
|
|
struct of_phandle_args *out_irq)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int of_irq_count(struct device_node *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int of_irq_get(struct device_node *dev, int index)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int of_irq_get_byname(struct device_node *dev, const char *name)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int of_irq_to_resource_table(struct device_node *dev,
|
|
struct resource *res, int nr_irqs)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void *of_irq_find_parent(struct device_node *child)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct irq_domain *of_msi_get_domain(struct device *dev,
|
|
struct device_node *np,
|
|
enum irq_domain_bus_token token)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
|
|
u32 id, u32 bus_token)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline void of_msi_configure(struct device *dev, struct device_node *np)
|
|
{
|
|
}
|
|
static inline u32 of_msi_map_id(struct device *dev,
|
|
struct device_node *msi_np, u32 id_in)
|
|
{
|
|
return id_in;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)
|
|
/*
|
|
* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
|
|
* implements it differently. However, the prototype is the same for all,
|
|
* so declare it here regardless of the CONFIG_OF_IRQ setting.
|
|
*/
|
|
extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
|
|
|
|
#else /* !CONFIG_OF && !CONFIG_SPARC */
|
|
static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
|
|
int index)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* !CONFIG_OF */
|
|
|
|
#endif /* __OF_IRQ_H */
|