The while loop in produce_free_peb() assumes that each work will produce a free PEB. This is not true. If ubi->works_count is 1 and the only scheduled work is the wear_leveling_worker() produce_free_peb() can loop forever in case nobody schedules an erase work. Fix this issue by checking in the while loop whether work is scheduled.
Signed-off-by: Richard Weinberger <[email protected]> --- drivers/mtd/ubi/wl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 0509c8a..6add739 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -272,7 +272,7 @@ static int produce_free_peb(struct ubi_device *ubi) { int err; - while (!ubi->free.rb_node) { + while (!ubi->free.rb_node && ubi->works_count) { spin_unlock(&ubi->wl_lock); dbg_wl("do one work synchronously"); -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
