tjh.dev
+5
include/linux/interrupt.h
+5
include/linux/interrupt.h
···
158
158
devname, dev_id);
159
159
}
160
160
161
+
extern int __must_check
162
+
devm_request_any_context_irq(struct device *dev, unsigned int irq,
163
+
irq_handler_t handler, unsigned long irqflags,
164
+
const char *devname, void *dev_id);
165
+
161
166
extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
162
167
163
168
/*
+45
kernel/irq/devres.c
+45
kernel/irq/devres.c
···
73
73
EXPORT_SYMBOL(devm_request_threaded_irq);
74
74
75
75
/**
76
+
* devm_request_any_context_irq - allocate an interrupt line for a managed device
77
+
* @dev: device to request interrupt for
78
+
* @irq: Interrupt line to allocate
79
+
* @handler: Function to be called when the IRQ occurs
80
+
* @thread_fn: function to be called in a threaded interrupt context. NULL
81
+
* for devices which handle everything in @handler
82
+
* @irqflags: Interrupt type flags
83
+
* @devname: An ascii name for the claiming device
84
+
* @dev_id: A cookie passed back to the handler function
85
+
*
86
+
* Except for the extra @dev argument, this function takes the
87
+
* same arguments and performs the same function as
88
+
* request_any_context_irq(). IRQs requested with this function will be
89
+
* automatically freed on driver detach.
90
+
*
91
+
* If an IRQ allocated with this function needs to be freed
92
+
* separately, devm_free_irq() must be used.
93
+
*/
94
+
int devm_request_any_context_irq(struct device *dev, unsigned int irq,
95
+
irq_handler_t handler, unsigned long irqflags,
96
+
const char *devname, void *dev_id)
97
+
{
98
+
struct irq_devres *dr;
99
+
int rc;
100
+
101
+
dr = devres_alloc(devm_irq_release, sizeof(struct irq_devres),
102
+
GFP_KERNEL);
103
+
if (!dr)
104
+
return -ENOMEM;
105
+
106
+
rc = request_any_context_irq(irq, handler, irqflags, devname, dev_id);
107
+
if (rc) {
108
+
devres_free(dr);
109
+
return rc;
110
+
}
111
+
112
+
dr->irq = irq;
113
+
dr->dev_id = dev_id;
114
+
devres_add(dev, dr);
115
+
116
+
return 0;
117
+
}
118
+
EXPORT_SYMBOL(devm_request_any_context_irq);
119
+
120
+
/**
76
121
* devm_free_irq - free an interrupt
77
122
* @dev: device to free interrupt for
78
123
* @irq: Interrupt line to free