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arm64: debug: Clean up brk_handler()

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brk_handler() now looks pretty strange and can be refactored to drop its
funny 'handler_found' local variable altogether.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2019-02-26 15:39:47 +00:00
parent 453b7740eb
commit ab6211c900
1 changed files with 4 additions and 6 deletions
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10
arch/arm64/kernel/debug-monitors.c
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@ -331,14 +331,12 @@ NOKPROBE_SYMBOL(call_break_hook);
static int brk_handler(unsigned long unused, unsigned int esr,
struct pt_regs *regs)
{
bool handler_found = false;
if (call_break_hook(regs, esr) == DBG_HOOK_HANDLED)
return 0;
if (!handler_found && call_break_hook(regs, esr) == DBG_HOOK_HANDLED)
handler_found = true;
if (!handler_found && user_mode(regs)) {
if (user_mode(regs)) {
send_user_sigtrap(TRAP_BRKPT);
} else if (!handler_found) {
} else {
pr_warn("Unexpected kernel BRK exception at EL1\n");
return -EFAULT;
}