1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 7c304eec78b5..db3efdef2433 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -173,6 +173,16 @@ retry:
                 ubi_err("error %d while reading %d bytes from PEB %d:%d, "
                         "read %zd bytes", err, len, pnum, offset, read);
                 ubi_dbg_dump_stack();
+
+                /*
+                 * The driver should never return -EBADMSG if it failed to read
+                 * all the requested data. But some buggy drivers might do
+                 * this, so we change it to -EIO.
+                 */
+                if (read != len && err == -EBADMSG) {
+                        ubi_assert(0);
+                        err = -EIO;
+                }
         } else {
                 ubi_assert(len == read);