[PATCH 3.16 140/410] mtd: ubi: wl: Fix error return code in ubi_wl_init()

From: Ben Hutchings
Date: Thu Jun 07 2018 - 11:54:26 EST


3.16.57-rc1 review patch. If anyone has any objections, please let me know.

------------------

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

commit 7233982ade15eeac05c6f351e8d347406e6bcd2f upstream.

Fix to return error code -ENOMEM from the kmem_cache_alloc() error
handling case instead of 0, as done elsewhere in this function.

Fixes: f78e5623f45b ("ubi: fastmap: Erase outdated anchor PEBs during
attach")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/mtd/ubi/wl.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1925,8 +1925,10 @@ int ubi_wl_init(struct ubi_device *ubi,
cond_resched();

e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
- if (!e)
+ if (!e) {
+ err = -ENOMEM;
goto out_free;
+ }

e->pnum = aeb->pnum;
e->ec = aeb->ec;
@@ -1966,8 +1968,10 @@ int ubi_wl_init(struct ubi_device *ubi,
cond_resched();

e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
- if (!e)
+ if (!e) {
+ err = -ENOMEM;
goto out_free;
+ }

e->pnum = aeb->pnum;
e->ec = aeb->ec;