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mtd, ubi: set free_count to zero before walking through erase list 

Set free_count to zero before walking through ai->erase list
in wl_init().

As U-Boot has no workqueue/threads, it immediately calls
erase_worker(), which increase for each erased block
free_count. Without this patch, free_count gets after
this initialized to zero in wl_init(), so the free_count
variable always has the maybe wrong value 0.

Detected this behaviour on the dxr2 board, where the
UBI fastmap gets not written when attaching/dettaching
on an empty NAND. It drops instead the error message:

could not find any anchor PEB

With this patch, fastmap gets written on dettach.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
utp
Heiko Schocher 2016-02-02 11:54:35 +01:00
parent ee8b25fa35
commit 68fc449033
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/ubi/wl.c
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@ -1528,6 +1528,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
INIT_LIST_HEAD(&ubi->pq[i]);
ubi->pq_head = 0;
ubi->free_count = 0;
list_for_each_entry_safe(aeb, tmp, &ai->erase, u.list) {
cond_resched();
@ -1546,7 +1547,6 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
found_pebs++;
}
ubi->free_count = 0;
list_for_each_entry(aeb, &ai->free, u.list) {
cond_resched();