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path: root/drivers/mtd/ubi/io.c
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-rw-r--r--drivers/mtd/ubi/io.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index eededf94f5a6..e347cc4388ed 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -344,6 +344,12 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum)
wait_queue_head_t wq;
dbg_io("erase PEB %d", pnum);
+ ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+
+ if (ubi->ro_mode) {
+ ubi_err("read-only mode");
+ return -EROFS;
+ }
retry:
init_waitqueue_head(&wq);
@@ -390,7 +396,7 @@ retry:
if (err)
return err;
- if (ubi_dbg_is_erase_failure() && !err) {
+ if (ubi_dbg_is_erase_failure()) {
dbg_err("cannot erase PEB %d (emulated)", pnum);
return -EIO;
}
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