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Diffstat (limited to 'drivers/mtd/ubi/build.c')
-rw-r--r--drivers/mtd/ubi/build.c7
1 files changed, 7 insertions, 0 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++)