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

Message ID 20180514112422.23988-6-richard@nod.at
State Superseded
Delegated to: Richard Weinberger
Headers show
Series
  • ubi: fastmap: Support for preseeded fastmap
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Commit Message

Richard Weinberger May 14, 2018, 11:24 a.m.
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@nod.at>
---
 drivers/mtd/ubi/fastmap.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

Patch

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);