Am 02.02.2016 um 11:54 schrieb Heiko Schocher:
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
added Richard to this EMail, as maybe this could be a problem in linux too ... ?
ubi_wl_init() is called by ubi_attach(). So, as soon your UBI image is attached the WL subsystem is fully initialized and ready to use. If you try to use it before you're in undefined state. u-boot must not run the erase_worker() before the attach phase is done.
Do you have more details what exactly happened? This needs a deeper investigation.
Thanks, //richard