Subject: [PATCH 03/10] scripts/basic/fixdep: Use the symbol "MAP_FAILED" in
 print_deps()
To: linux-kbuild@vger.kernel.org, Michal Marek <mmarek@suse.com>
References: <72e07814-56e9-505a-d660-91ff20b6efea@users.sourceforge.net>
Cc: LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org
From: SF Markus Elfring <elfring@users.sourceforge.net>
Message-ID: <682bce8d-61cb-0e50-1a7e-93328e3d8c08@users.sourceforge.net>
Date: Fri, 28 Oct 2016 10:33:41 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <72e07814-56e9-505a-d660-91ff20b6efea@users.sourceforge.net>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 739
Lines: 26

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 27 Oct 2016 18:18:54 +0200

Check the return value from a call of the function "mmap" by using
the preprocessor symbol "MAP_FAILED".

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 scripts/basic/fixdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index c9ce3e3..0dcec29 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -417,7 +417,7 @@ static void print_deps(void)
 		goto close_fd;
 	}
 	map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-	if ((long) map == -1) {
+	if (map == MAP_FAILED) {
 		perror("fixdep: mmap");
 		goto close_fd;
 	}
-- 
2.10.1