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[LMB]: Fix initial lmb add region with a non-zero base

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If we add to an empty lmb region with a non-zero base we will not
coalesce the number of regions down to one.  This causes problems on
ppc32 for the memory region as its assumed to only have one region.

We can fix this be easily specially casing the initial add to just
replace the dummy region.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Gala 2008-02-13 16:58:11 -08:00 committed by David S. Miller
parent eea89e13a9
commit 27e6672bb9
1 changed files with 6 additions and 0 deletions
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6
lib/lmb.c
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@ -134,6 +134,12 @@ static long __init lmb_add_region(struct lmb_region *rgn, unsigned long base,
unsigned long coalesced = 0;
long adjacent, i;
if ((rgn->cnt == 1) && (rgn->region[0].size == 0)) {
rgn->region[0].base = base;
rgn->region[0].size = size;
return 0;
}
/* First try and coalesce this LMB with another. */
for (i=0; i < rgn->cnt; i++) {
unsigned long rgnbase = rgn->region[i].base;