@@ -387,6 +387,13 @@ int lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size)
return lmb_reserve_flags(lmb, base, size, LMB_NONE);
}
+/**
+ * lmb_overlaps_region() - Check if a region overlaps a given base/size
+ *
+ * @base: base address of the memory region
+ * @size: size of the memory region
+ * Returns: Region number of overlapping region, if found, else -ENOENT
+ */
static int lmb_overlaps_region(struct lmb_region *rgn, phys_addr_t base,
phys_size_t size)
{
@@ -396,10 +403,10 @@ static int lmb_overlaps_region(struct lmb_region *rgn, phys_addr_t base,
phys_addr_t rgnbase = rgn->region[i].base;
phys_size_t rgnsize = rgn->region[i].size;
if (lmb_addrs_overlap(base, size, rgnbase, rgnsize))
- break;
+ return i;
}
- return i < rgn->cnt ? i : -1;
+ return -ENOENT;
}
phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align)
Add a comment to define what this returns. Return a specific error when no overlap is found. Signed-off-by: Simon Glass <sjg@chromium.org> --- lib/lmb.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)