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[S390] Fix memory detection.

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Yet another patch in the countless series of memory detection fixes:
if the last area of the reported storage size is a hole the detection
loop will loop forever.
Just break chunk detection loop if its end is going to be larger than
reported storage size.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2007-11-05 11:10:11 +01:00
committed by Martin Schwidefsky
parent 0d2be08893
commit 0b8da654b6
1 changed files with 3 additions and 1 deletions
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4
arch/s390/kernel/early.c
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@@ -200,11 +200,13 @@ static noinline __init void find_memory_chunks(unsigned long memsize)
cc = __tprot(addr); cc = __tprot(addr);
while (cc == old_cc) { while (cc == old_cc) {
addr += CHUNK_INCR; addr += CHUNK_INCR;
cc = __tprot(addr); if (addr >= memsize)
break;
#ifndef CONFIG_64BIT #ifndef CONFIG_64BIT
if (addr == ADDR2G) if (addr == ADDR2G)
break; break;
#endif #endif
cc = __tprot(addr);
} }
if (old_addr != addr && if (old_addr != addr &&