UBI: Fastmap: Remove is_fm_block()

This function was added to fastmap in a very early stage
to have paranoid assertions.
With the current fastmap implementation this assert will never
trigger as fastmap PEBs are not seen by the WL sub-system.
Remove it to save us some CPU cycles.

Signed-off-by: Richard Weinberger <richard@nod.at>

3 files changed, 0 insertions, 29 deletions

diff --git a/drivers/mtd/ubi/fastmap-wl.c b/drivers/mtd/ubi/fastmap-wl.c
index 067aa9042ec1..b2a665398bca 100644
--- a/drivers/mtd/ubi/fastmap-wl.c
+++ b/drivers/mtd/ubi/fastmap-wl.c
@@ -29,25 +29,6 @@ static void update_fastmap_work_fn(struct work_struct *wrk)
 }
 
 /**
- *  is_fm_block - returns 1 if a PEB is currently used in a fastmap.
- *  @ubi: UBI device description object
- *  @pnum: the to be checked PEB
- */
-static int is_fm_block(struct ubi_device *ubi, int pnum)
-{
-        int i;
-
-        if (!ubi->fm)
-                return 0;
-
-        for (i = 0; i < ubi->fm->used_blocks; i++)
-                if (ubi->fm->e[i]->pnum == pnum)
-                        return 1;
-
-        return 0;
-}
-
-/**
  * find_anchor_wl_entry - find wear-leveling entry to used as anchor PEB.
  * @root: the RB-tree where to look for
  */
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 94ffdeb370c1..16214d3d57a4 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -585,7 +585,6 @@ static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
         struct ubi_work *wl_wrk;
 
         ubi_assert(e);
-        ubi_assert(!is_fm_block(ubi, e->pnum));
 
         dbg_wl("schedule erasure of PEB %d, EC %d, torture %d",
                e->pnum, e->ec, torture);
@@ -1045,8 +1044,6 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
         dbg_wl("erase PEB %d EC %d LEB %d:%d",
                pnum, e->ec, wl_wrk->vol_id, wl_wrk->lnum);
 
-        ubi_assert(!is_fm_block(ubi, e->pnum));
-
         err = sync_erase(ubi, e, wl_wrk->torture);
         if (!err) {
                 /* Fine, we've erased it successfully */
@@ -1526,7 +1523,6 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
 
                 e->pnum = aeb->pnum;
                 e->ec = aeb->ec;
-                ubi_assert(!is_fm_block(ubi, e->pnum));
                 ubi->lookuptbl[e->pnum] = e;
                 if (schedule_erase(ubi, e, aeb->vol_id, aeb->lnum, 0)) {
                         wl_entry_destroy(ubi, e);
@@ -1547,7 +1543,6 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
                 e->pnum = aeb->pnum;
                 e->ec = aeb->ec;
                 ubi_assert(e->ec >= 0);
-                ubi_assert(!is_fm_block(ubi, e->pnum));
 
                 wl_tree_add(e, &ubi->free);
                 ubi->free_count++;
diff --git a/drivers/mtd/ubi/wl.h b/drivers/mtd/ubi/wl.h
index fbc2d8e312df..bd1f07e5ce9a 100644
--- a/drivers/mtd/ubi/wl.h
+++ b/drivers/mtd/ubi/wl.h
@@ -1,7 +1,6 @@
 #ifndef UBI_WL_H
 #define UBI_WL_H
 #ifdef CONFIG_MTD_UBI_FASTMAP
-static int is_fm_block(struct ubi_device *ubi, int pnum);
 static int anchor_pebs_avalible(struct rb_root *root);
 static void update_fastmap_work_fn(struct work_struct *wrk);
 static struct ubi_wl_entry *find_anchor_wl_entry(struct rb_root *root);
@@ -18,10 +17,6 @@ static struct ubi_wl_entry *may_reserve_for_fm(struct ubi_device *ubi,
                                                struct rb_root *root);
 #else /* !CONFIG_MTD_UBI_FASTMAP */
 static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi);
-static inline int is_fm_block(struct ubi_device *ubi, int pnum)
-{
-        return 0;
-}
 static inline void ubi_fastmap_close(struct ubi_device *ubi) { }
 static inline void ubi_fastmap_init(struct ubi_device *ubi, int *count) { }
 static struct ubi_wl_entry *may_reserve_for_fm(struct ubi_device *ubi,