[PATCH 5/8] ubi: fastmap: Fixup pool sizes for preseeded fastmaps

[Richard Weinberger]

A preseeded fastmap has, by definition, no dirty PEBs and therefore all
pools are empty. The creation tool can also not calculate the maximal
pool sizes. This means we have to set them during attach.

Signed-off-by: Richard Weinberger <richard at nod.at>
---
 drivers/mtd/ubi/fastmap.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index f40cd2b18d4c..0d1274b69274 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -620,8 +620,15 @@ static int ubi_attach_fastmap(struct ubi_device *ubi,
 
 	pool_size = be16_to_cpu(fmpl->size);
 	wl_pool_size = be16_to_cpu(fmpl_wl->size);
-	fm->max_pool_size = be16_to_cpu(fmpl->max_size);
-	fm->max_wl_pool_size = be16_to_cpu(fmpl_wl->max_size);
+
+	if (fm->flags & UBI_FM_SB_PRESEEDED_FLG) {
+		fm->max_pool_size = ubi->fm_pool.max_size;
+		fm->max_wl_pool_size = ubi->fm_wl_pool.max_size;
+
+	} else {
+		fm->max_pool_size = be16_to_cpu(fmpl->max_size);
+		fm->max_wl_pool_size = be16_to_cpu(fmpl_wl->max_size);
+	}
 
 	if (pool_size > UBI_FM_MAX_POOL_SIZE || pool_size < 0) {
 		ubi_err(ubi, "bad pool size: %i", pool_size);
-- 
2.13.6