fs: jffs2: make jffs2 work zero oobavail

[karo-tx-linux.git] / drivers / mtd / nand / nand_base.c

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ec1db1e19c053367c61a5428319c21f49ad44a5d..2d9fe18e58c640e9a364ad065cc58360421dd1c4 100644 (file)
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1741,6 +1741,9 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
        else
                len = mtd->oobsize;
 
+       if (len == 0)
+               return 0;
+
        if (unlikely(ops->ooboffs >= len)) {
                pr_debug("%s: attempt to start read outside oob\n",
                                __func__);
@@ -2409,6 +2412,9 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
        else
                len = mtd->oobsize;
 
+       if (len == 0)
+               return 0;
+
        /* Do not allow write past end of page */
        if ((ops->ooboffs + ops->ooblen) > len) {
                pr_debug("%s: attempt to write past end of page\n",