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arm64: debug: Remove unused return value from do_debug_exception() 

do_debug_exception() goes out of its way to return a value that isn't
ever used, so just make the thing void.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2019-02-25 12:06:43 +00:00
parent e2092740b7
commit 52c6d145da
1 changed files with 4 additions and 10 deletions
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14
arch/arm64/mm/fault.c
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@ -810,13 +810,12 @@ void __init hook_debug_fault_code(int nr,
debug_fault_info[nr].name = name;
}
asmlinkage int __exception do_debug_exception(unsigned long addr_if_watchpoint,
unsigned int esr,
struct pt_regs *regs)
asmlinkage void __exception do_debug_exception(unsigned long addr_if_watchpoint,
unsigned int esr,
struct pt_regs *regs)
{
const struct fault_info *inf = esr_to_debug_fault_info(esr);
unsigned long pc = instruction_pointer(regs);
int rv;
/*
* Tell lockdep we disabled irqs in entry.S. Do nothing if they were
@ -828,17 +827,12 @@ asmlinkage int __exception do_debug_exception(unsigned long addr_if_watchpoint,
if (user_mode(regs) && !is_ttbr0_addr(pc))
arm64_apply_bp_hardening();
if (!inf->fn(addr_if_watchpoint, esr, regs)) {
rv = 1;
} else {
if (inf->fn(addr_if_watchpoint, esr, regs)) {
arm64_notify_die(inf->name, regs,
inf->sig, inf->code, (void __user *)pc, esr);
rv = 0;
}
if (interrupts_enabled(regs))
trace_hardirqs_on();
return rv;
}
NOKPROBE_SYMBOL(do_debug_exception);