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-rw-r--r--drivers/mtd/ubi/build.c7
-rw-r--r--drivers/mtd/ubi/eba.c2
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 3eb14c68c..3e7e5b51e 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -878,6 +878,13 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
return -EINVAL;
}
+ /* UBI cannot work on flashes with zero erasesize. */
+ if (!mtd->erasesize) {
+ pr_err("ubi: refuse attaching mtd%d - zero erasesize flash is not supported\n",
+ mtd->index);
+ return -EINVAL;
+ }
+
if (ubi_num == UBI_DEV_NUM_AUTO) {
/* Search for an empty slot in the @ubi_devices array */
for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++)
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 3e25421f2..fa6ff7545 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -612,7 +612,7 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
int err, pnum, scrub = 0, vol_id = vol->vol_id;
struct ubi_vid_io_buf *vidb;
struct ubi_vid_hdr *vid_hdr;
- uint32_t uninitialized_var(crc);
+ uint32_t crc;
err = leb_read_lock(ubi, vol_id, lnum);
if (err)