UBI: always re-read in case of read failures

When the read operation fails, UBI tries to re-read several times in
a hope that one of the subsequent reads may succeed. However, currently
UBI re-reads only if MTD failed to read all data, but does not re-reads
if all the data were read, but with an integrity error (-EBADMSB). This
patch makes UBI to always re-try reading.

This should be useful for reading NAND pages with unstable bits -
re-reading may help to get correct data.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 6f90a6530149..889e25c49323 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -188,7 +188,7 @@ retry:
                         return UBI_IO_BITFLIPS;
                 }
 
-                if (read != len && retries++ < UBI_IO_RETRIES) {
+                if (retries++ < UBI_IO_RETRIES) {
                         dbg_io("error %d%s while reading %d bytes from PEB %d:%d,"
                                " read only %zd bytes, retry",
                                err, errstr, len, pnum, offset, read);