lseek: return -1 instead of -errno

The patch making errno a positive value has another bug:
lseek was switched to return -errno instead of -1. This does not
work since we can lseek we can address the whole 4G address space,
have of which has a negative offset when interpreted as a signed
integer. Let lseek return -1 on failure again instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/commands/mem.c b/commands/mem.c
index f32e5d8299..080bfdef3f 100644
--- a/commands/mem.c
+++ b/commands/mem.c
@@ -122,10 +122,10 @@ static int open_and_lseek(const char *filename, int mode, off_t pos)
 		return fd;
 
 	ret = lseek(fd, pos, SEEK_SET);
-	if (ret < 0) {
+	if (ret == -1) {
 		perror("lseek");
 		close(fd);
-		return ret;
+		return -errno;
 	}
 
 	return fd;