From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 2 May 2013 16:33:21 +0000 (-0400)
Subject: flash_erase: use pwrite() rather than lseek() && write()
X-Git-Tag: v1.5.1~23
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d51d421d1b8f1afcedb8593ce835819c57792f45;p=mtd-utils.git

flash_erase: use pwrite() rather than lseek() && write()

Saves a syscall.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
---

diff --git a/flash_erase.c b/flash_erase.c
index 326a299..1421cf9 100644
--- a/flash_erase.c
+++ b/flash_erase.c
@@ -277,11 +277,7 @@ int main(int argc, char *argv[])
 				continue;
 			}
 		} else {
-			if (lseek(fd, offset, SEEK_SET) < 0) {
-				sys_errmsg("%s: MTD lseek failure", mtd_device);
-				continue;
-			}
-			if (write(fd, &cleanmarker, sizeof(cleanmarker)) != sizeof(cleanmarker)) {
+			if (pwrite(fd, &cleanmarker, sizeof(cleanmarker), (loff_t)offset) != sizeof(cleanmarker)) {
 				sys_errmsg("%s: MTD write failure", mtd_device);
 				continue;
 			}