Commit 27e6672b authored Feb 13, 2008 by Kumar Gala Committed by David S. Miller Feb 13, 2008

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



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>

parent eea89e13

lib/lmb.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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;

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