util/nvmutil: tidy up rw_file_exact

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 7 insertions, 3 deletions

diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index 28a2332c..7ece1764 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -1876,9 +1876,13 @@ rw_file_exact(int fd, u8 *mem, size_t nrw,
 		if ((size_t)rc >= nrw)
 			break;
 
-		if ((rv = prw(fd,
-		    mem + (size_t)rc, nrw - rc, off + rc, rw_type,
-		    loop_eagain, loop_eintr)) < 0)
+		rv = prw(fd,
+		    mem + (size_t)rc,
+		    nrw - (size_t)rc,
+		    off + (off_t)rc,
+		    rw_type, loop_eagain, loop_eintr);
+
+		if (rv < 0)
 			return -1;
 	
 		/* Prevent theoretical overflow */