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[S390] irq: external interrupt code passing

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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>
This commit is contained in:
Heiko Carstens
2012-03-11 11:59:31 -04:00
committed by Martin Schwidefsky
parent 2215011dd9
commit fde15c3a3a
12 changed files with 32 additions and 30 deletions
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3
arch/s390/kernel/entry.h
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@@ -35,7 +35,8 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
siginfo_t *info, sigset_t *oldset, struct pt_regs *regs);
void do_notify_resume(struct pt_regs *regs);
void do_extint(struct pt_regs *regs, unsigned int, unsigned int, unsigned long);
struct ext_code;
void do_extint(struct pt_regs *regs, struct ext_code, unsigned int, unsigned long);
void do_restart(void);
void __init startup_init(void);
void die(struct pt_regs *regs, const char *str);