From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed, 8 Jun 2022 07:51:14 +0000 (+0200)
Subject: mtd-utils: nanddump: fix writing big images on 32bit machines
X-Git-Tag: v2.1.5~10
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f79d2b21614f11ea9f99dc5a3155d23439cec773;p=mtd-utils.git

mtd-utils: nanddump: fix writing big images on 32bit machines

When writing a full 4GiB NAND to a file end_addr becomes 0x100000000.
With that writing out the first page to the file doesn't happen
because size_left is calculated to 0x100000000 - 0 = 0x100000000
which is then truncated to 32bit and becomes zero. Fix this by
using an appropriate 64bit type for size_left.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---

diff --git a/nand-utils/nanddump.c b/nand-utils/nanddump.c
index d7fc320..47539f5 100644
--- a/nand-utils/nanddump.c
+++ b/nand-utils/nanddump.c
@@ -499,7 +499,7 @@ int main(int argc, char * const argv[])
 			}
 		} else {
 			/* Write requested length if oob is omitted */
-			size_t size_left = end_addr - ofs;
+			long long size_left = end_addr - ofs;
 			if (omitoob && (size_left < bs))
 				err = ofd_write(ofd, readbuf, size_left);
 			else