mtdblock: tolerate corrected bit-flips

mtd_read() may return -EUCLEAN in case of corrected bit-flips.This
particular condition should not be treated like an error.

Signed-off-by: Bang Li <libang.linuxer@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230314165653.252673-1-libang.linuxer@gmail.com

diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c
index 7c51952ce55dee8951eedc3b3fcb76d005bc47b6..66ffc9f1ead2f76aa142f04801fa292de7e8d5e1 100644 (file)
--- a/drivers/mtd/mtdblock_ro.c
+++ b/drivers/mtd/mtdblock_ro.c
@@ -16,8 +16,10 @@ static int mtdblock_readsect(struct mtd_blktrans_dev *dev,
                              unsigned long block, char *buf)
 {
        size_t retlen;
+       int err;
 
-       if (mtd_read(dev->mtd, (block * 512), 512, &retlen, buf))
+       err = mtd_read(dev->mtd, (block * 512), 512, &retlen, buf);
+       if (err && !mtd_is_bitflip(err))
                return 1;
        return 0;
 }