s390: fix compile error with memmove_early() inline assembly
Old gcc versions can't handle a bogus early clobber on a Q constraint:
arch/s390/kernel/early.c: In function 'memmove_early.part.1':
arch/s390/kernel/early.c:432:2: error: '&' constraint used with no register class
Simply remove it to fix this.
Reported-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Fixes: d543a106f9
("s390: fix initrd corruptions with gcov/kcov instrumented kernels")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -417,7 +417,7 @@ static __init void memmove_early(void *dst, const void *src, size_t n)
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" brctg %[n],0b\n"
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"1:\n"
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: [addr] "=&d" (addr),
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[psw_pgm_addr] "=&Q" (S390_lowcore.program_new_psw.addr),
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[psw_pgm_addr] "=Q" (S390_lowcore.program_new_psw.addr),
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[dst] "+&a" (dst), [src] "+&a" (src), [n] "+d" (n)
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: [incr] "d" (incr)
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: "cc", "memory");
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