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s390/mm,fault: replace WARN_ON_ONCE() with unreachable()

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do_secure_storage_access() contains a switch statements which handles
all possible return values from get_fault_type(). Therefore remove the
pointless default case error handling and replace it with unreachable().

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-10-12 09:40:39 +02:00 committed by Vasily Gorbik
parent 5c845de331
commit ae626f6863
1 changed files with 1 additions and 2 deletions
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3
arch/s390/mm/fault.c
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@ -618,8 +618,7 @@ void do_secure_storage_access(struct pt_regs *regs)
BUG();
break;
default:
do_fault_error(regs, VM_FAULT_BADMAP);
WARN_ON_ONCE(1);
unreachable();
}
}
NOKPROBE_SYMBOL(do_secure_storage_access);