mtd: do not duplicate length and offset checks in drivers

[firefly-linux-kernel-4.4.55.git] / drivers / mtd / devices / ms02-nv.c

diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c
index 8423fb6d4f26b05df635ee14608e654599627fc7..182849d39c61acb34c40a79ab6bf04e30162da79 100644 (file)
--- a/drivers/mtd/devices/ms02-nv.c
+++ b/drivers/mtd/devices/ms02-nv.c
@@ -59,12 +59,8 @@ static int ms02nv_read(struct mtd_info *mtd, loff_t from,
 {
        struct ms02nv_private *mp = mtd->priv;
 
-       if (from + len > mtd->size)
-               return -EINVAL;
-
        memcpy(buf, mp->uaddr + from, len);
        *retlen = len;
-
        return 0;
 }
 
@@ -73,12 +69,8 @@ static int ms02nv_write(struct mtd_info *mtd, loff_t to,
 {
        struct ms02nv_private *mp = mtd->priv;
 
-       if (to + len > mtd->size)
-               return -EINVAL;
-
        memcpy(mp->uaddr + to, buf, len);
        *retlen = len;
-
        return 0;
 }
 
@@ -215,8 +207,8 @@ static int __init ms02nv_init_one(ulong addr)
        mtd->size = fixsize;
        mtd->name = (char *)ms02nv_name;
        mtd->owner = THIS_MODULE;
-       mtd->read = ms02nv_read;
-       mtd->write = ms02nv_write;
+       mtd->_read = ms02nv_read;
+       mtd->_write = ms02nv_write;
        mtd->writesize = 1;
 
        ret = -EIO;