Commit 12cf6473 authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Heiko Carstens
Browse files

s390/maccess: remove dead DAT-off code 



As the kernel is executed in DAT-on mode only, remove
unnecessary DAT bit check together with the dead code.

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent bb1520d5

arch/s390/mm/maccess.c

+5 −9
Original line number Diff line number Diff line
@@ -68,16 +68,12 @@ notrace void *s390_kernel_write(void *dst, const void *src, size_t size) 
	long copied;



	spin_lock_irqsave(&s390_kernel_write_lock, flags);

	if (!(flags & PSW_MASK_DAT)) {

		memcpy(dst, src, size);

	} else {

	while (size) {

		copied = s390_kernel_write_odd(tmp, src, size);

		tmp += copied;

		src += copied;

		size -= copied;

	}

	}

	spin_unlock_irqrestore(&s390_kernel_write_lock, flags);



	return dst;