From ec5e34c074793a1f80faaf75e9468dd2f39ec1dc Mon Sep 17 00:00:00 2001
From: Nick Kralevich <nnk@google.com>
Date: Mon, 12 May 2014 16:55:16 +0100
Subject: [PATCH] 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>
---
 drivers/staging/goldfish/goldfish_nand.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/staging/goldfish/goldfish_nand.c b/drivers/staging/goldfish/goldfish_nand.c
index b8e3dd28096d..b7ca553dfa29 100644
--- 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)