diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2012-03-11 11:59:31 -0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-03-11 11:59:29 -0400 |
| commit | fde15c3a3adc7b65cd0610dd6bca4804ee7ffd38 (patch) | |
| tree | 62c1f93d33a7449fb07250993e4cf4086d5aa273 /arch/s390/kernel/irq.c | |
| parent | 2215011dd9c1b01f1fc430620ed31f2baad267c3 (diff) | |
[S390] irq: external interrupt code passing
The external interrupt handlers have a parameter called ext_int_code.
Besides the name this paramter does not only contain the ext_int_code
but in addition also the "cpu address" (POP) which caused the external
interrupt.
To make the code a bit more obvious pass a struct instead so the called
function can easily distinguish between external interrupt code and
cpu address. The cpu address field however is named "subcode" since
some external interrupt sources do not pass a cpu address but a
different parameter (or none at all).
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/irq.c')
| -rw-r--r-- | arch/s390/kernel/irq.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 09a014c6253..7a97d57f707 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -209,29 +209,27 @@ int unregister_external_interrupt(u16 code, ext_int_handler_t handler) } EXPORT_SYMBOL(unregister_external_interrupt); -void __irq_entry do_extint(struct pt_regs *regs, unsigned int ext_int_code, +void __irq_entry do_extint(struct pt_regs *regs, struct ext_code ext_code, unsigned int param32, unsigned long param64) { struct pt_regs *old_regs; - unsigned short code; struct ext_int_info *p; int index; - code = (unsigned short) ext_int_code; old_regs = set_irq_regs(regs); irq_enter(); if (S390_lowcore.int_clock >= S390_lowcore.clock_comparator) /* Serve timer interrupts first. */ clock_comparator_work(); kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++; - if (code != 0x1004) + if (ext_code.code != 0x1004) __get_cpu_var(s390_idle).nohz_delay = 1; - index = ext_hash(code); + index = ext_hash(ext_code.code); rcu_read_lock(); list_for_each_entry_rcu(p, &ext_int_hash[index], entry) - if (likely(p->code == code)) - p->handler(ext_int_code, param32, param64); + if (likely(p->code == ext_code.code)) + p->handler(ext_code, param32, param64); rcu_read_unlock(); irq_exit(); set_irq_regs(old_regs); |