diff options
Diffstat (limited to 'kernel/irq/chip.c')
-rw-r--r-- | kernel/irq/chip.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 3405761d6224..baa5c4acad83 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c | |||
@@ -18,108 +18,6 @@ | |||
18 | 18 | ||
19 | #include "internals.h" | 19 | #include "internals.h" |
20 | 20 | ||
21 | static void dynamic_irq_init_x(unsigned int irq, bool keep_chip_data) | ||
22 | { | ||
23 | struct irq_desc *desc; | ||
24 | unsigned long flags; | ||
25 | |||
26 | desc = irq_to_desc(irq); | ||
27 | if (!desc) { | ||
28 | WARN(1, KERN_ERR "Trying to initialize invalid IRQ%d\n", irq); | ||
29 | return; | ||
30 | } | ||
31 | |||
32 | /* Ensure we don't have left over values from a previous use of this irq */ | ||
33 | raw_spin_lock_irqsave(&desc->lock, flags); | ||
34 | desc->status = IRQ_DEFAULT_INIT_FLAGS; | ||
35 | desc->irq_data.chip = &no_irq_chip; | ||
36 | desc->handle_irq = handle_bad_irq; | ||
37 | desc->depth = 1; | ||
38 | desc->irq_data.msi_desc = NULL; | ||
39 | desc->irq_data.handler_data = NULL; | ||
40 | if (!keep_chip_data) | ||
41 | desc->irq_data.chip_data = NULL; | ||
42 | desc->action = NULL; | ||
43 | desc->irq_count = 0; | ||
44 | desc->irqs_unhandled = 0; | ||
45 | #ifdef CONFIG_SMP | ||
46 | cpumask_setall(desc->irq_data.affinity); | ||
47 | #ifdef CONFIG_GENERIC_PENDING_IRQ | ||
48 | cpumask_clear(desc->pending_mask); | ||
49 | #endif | ||
50 | #endif | ||
51 | raw_spin_unlock_irqrestore(&desc->lock, flags); | ||
52 | } | ||
53 | |||
54 | /** | ||
55 | * dynamic_irq_init - initialize a dynamically allocated irq | ||
56 | * @irq: irq number to initialize | ||
57 | */ | ||
58 | void dynamic_irq_init(unsigned int irq) | ||
59 | { | ||
60 | dynamic_irq_init_x(irq, false); | ||
61 | } | ||
62 | |||
63 | /** | ||
64 | * dynamic_irq_init_keep_chip_data - initialize a dynamically allocated irq | ||
65 | * @irq: irq number to initialize | ||
66 | * | ||
67 | * does not set irq_to_desc(irq)->irq_data.chip_data to NULL | ||
68 | */ | ||
69 | void dynamic_irq_init_keep_chip_data(unsigned int irq) | ||
70 | { | ||
71 | dynamic_irq_init_x(irq, true); | ||
72 | } | ||
73 | |||
74 | static void dynamic_irq_cleanup_x(unsigned int irq, bool keep_chip_data) | ||
75 | { | ||
76 | struct irq_desc *desc = irq_to_desc(irq); | ||
77 | unsigned long flags; | ||
78 | |||
79 | if (!desc) { | ||
80 | WARN(1, KERN_ERR "Trying to cleanup invalid IRQ%d\n", irq); | ||
81 | return; | ||
82 | } | ||
83 | |||
84 | raw_spin_lock_irqsave(&desc->lock, flags); | ||
85 | if (desc->action) { | ||
86 | raw_spin_unlock_irqrestore(&desc->lock, flags); | ||
87 | WARN(1, KERN_ERR "Destroying IRQ%d without calling free_irq\n", | ||
88 | irq); | ||
89 | return; | ||
90 | } | ||
91 | desc->irq_data.msi_desc = NULL; | ||
92 | desc->irq_data.handler_data = NULL; | ||
93 | if (!keep_chip_data) | ||
94 | desc->irq_data.chip_data = NULL; | ||
95 | desc->handle_irq = handle_bad_irq; | ||
96 | desc->irq_data.chip = &no_irq_chip; | ||
97 | desc->name = NULL; | ||
98 | clear_kstat_irqs(desc); | ||
99 | raw_spin_unlock_irqrestore(&desc->lock, flags); | ||
100 | } | ||
101 | |||
102 | /** | ||
103 | * dynamic_irq_cleanup - cleanup a dynamically allocated irq | ||
104 | * @irq: irq number to initialize | ||
105 | */ | ||
106 | void dynamic_irq_cleanup(unsigned int irq) | ||
107 | { | ||
108 | dynamic_irq_cleanup_x(irq, false); | ||
109 | } | ||
110 | |||
111 | /** | ||
112 | * dynamic_irq_cleanup_keep_chip_data - cleanup a dynamically allocated irq | ||
113 | * @irq: irq number to initialize | ||
114 | * | ||
115 | * does not set irq_to_desc(irq)->irq_data.chip_data to NULL | ||
116 | */ | ||
117 | void dynamic_irq_cleanup_keep_chip_data(unsigned int irq) | ||
118 | { | ||
119 | dynamic_irq_cleanup_x(irq, true); | ||
120 | } | ||
121 | |||
122 | |||
123 | /** | 21 | /** |
124 | * set_irq_chip - set the irq chip for an irq | 22 | * set_irq_chip - set the irq chip for an irq |
125 | * @irq: irq number | 23 | * @irq: irq number |