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irqdomain/debugfs: Use PAs to generate fwnode names

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Booting a large arm64 server (HiSi D05) leads to the following
shouting at boot time:

[   20.722132] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.730851] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.739560] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.748267] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.756975] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.765683] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!
[   20.774391] debugfs: File 'irqchip@(____ptrval____)-3' in directory 'domains' already present!

and many more... Evidently, we expect something a bit more informative
than ____ptrval____, and certainly we want all of our domains, not just
the first one.

For that, turn the %p used to generate the fwnode name into something
that won't be repainted (%pa). Given that we've now fixed all users to
pass a pointer to a PA, it will actually do the right thing.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2019-07-31 15:13:19 +01:00
parent 467a3bb974
commit b977fcf477
2 changed files with 8 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/irqdomain.h
View file

@ -220,7 +220,7 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
#ifdef CONFIG_IRQ_DOMAIN
struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
const char *name, void *data);
const char *name, phys_addr_t *pa);
enum {
IRQCHIP_FWNODE_REAL,
@ -241,9 +241,9 @@ struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id)
NULL);
}
static inline struct fwnode_handle *irq_domain_alloc_fwnode(void *data)
static inline struct fwnode_handle *irq_domain_alloc_fwnode(phys_addr_t *pa)
{
return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, data);
return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_REAL, 0, NULL, pa);
}
void irq_domain_free_fwnode(struct fwnode_handle *fwnode);