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genirq: Enhance irq_data_to_desc() to support hierarchy irqdomain

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For irq associated with hierarchy irqdomains, there will be multiple
irq_datas for one irq_desc. So enhance irq_data_to_desc() to support
hierarchy irqdomain. Also export irq_data_to_desc() as an inline
function for later reuse.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1433145945-789-2-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jiang Liu 2015-06-01 16:05:10 +08:00 committed by Thomas Gleixner
parent c1d993341e
commit c7cfc94096
2 changed files with 9 additions and 2 deletions
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9
include/linux/irqdesc.h
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@ -93,6 +93,15 @@ struct irq_desc {
extern struct irq_desc irq_desc[NR_IRQS];
#endif
static inline struct irq_desc *irq_data_to_desc(struct irq_data *data)
{
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
return irq_to_desc(data->irq);
#else
return container_of(data, struct irq_desc, irq_data);
#endif
}
static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc)
{
return &desc->irq_data;

2
kernel/irq/internals.h
View File

@ -59,8 +59,6 @@ enum {
#include "debug.h"
#include "settings.h"
#define irq_data_to_desc(data) container_of(data, struct irq_desc, irq_data)
extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
unsigned long flags);
extern void __disable_irq(struct irq_desc *desc, unsigned int irq);