goldfish_nand.c: remove length restrictions

Remove limitations on the size of a read / write request.
AFAIK, there's no consequence to allowing the upper layers
to specify different read / write sizes.

This is needed to support running ext4 on goldfish.

Bug: https://code.google.com/p/android/issues/detail?id=38561

Signed-off-by: Nick Kralevich <nnk@google.com>
Signed-off-by: Jun Tian <jun.j.tian@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/goldfish/goldfish_nand.c b/drivers/staging/goldfish/goldfish_nand.c
index b8e3dd2..b7ca553 100644 (file)
--- a/drivers/staging/goldfish/goldfish_nand.c
+++ b/drivers/staging/goldfish/goldfish_nand.c
@@ -202,8 +202,6 @@ static int goldfish_nand_read(struct mtd_info *mtd, loff_t from, size_t len,
 
        if (from + len > mtd->size)
                goto invalid_arg;
-       if (len != mtd->writesize)
-               goto invalid_arg;
 
        rem = do_div(from, mtd->writesize);
        if (rem)
@@ -226,8 +224,6 @@ static int goldfish_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
 
        if (to + len > mtd->size)
                goto invalid_arg;
-       if (len != mtd->writesize)
-               goto invalid_arg;
 
        rem = do_div(to, mtd->writesize);
        if (rem)