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s390/irq: rework irq subclass handling

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Let's not add a function for every external interrupt subclass for
which we need reference counting. Just have two register/unregister
functions which have a subclass parameter:

void irq_subclass_register(enum irq_subclass subclass);
void irq_subclass_unregister(enum irq_subclass subclass);

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens
2013-09-04 13:35:45 +02:00
parent 50ce749d0d
commit 82003c3e60
9 changed files with 38 additions and 57 deletions
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4
arch/s390/kernel/runtime_instr.c
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@@ -139,10 +139,10 @@ static int __init runtime_instr_init(void)
if (!runtime_instr_avail())
return 0;
measurement_alert_subclass_register();
irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
rc = register_external_interrupt(0x1407, runtime_instr_int_handler);
if (rc)
measurement_alert_subclass_unregister();
irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
else
pr_info("Runtime instrumentation facility initialized\n");
return rc;