linux-kernel - [PATCH 5/9] um/drivers/vector_user: Delete two unnecessary checks before freeaddrinfo() in user_init_socket

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Date:   Sun, 11 Mar 2018 16:20:24 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     user-mode-linux-devel@...ts.sourceforge.net,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>
Cc:     user-mode-linux-user@...ts.sourceforge.net,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/9] um/drivers/vector_user: Delete two unnecessary checks
 before freeaddrinfo() in user_init_socket_fds()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 11 Mar 2018 14:20:46 +0100

The implementation returns from this function if a null pointer
was detected in the local variable "gairesult". Thus the check
before two calls of the function "freeaddrinfo" is not needed.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/um/drivers/vector_user.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/um/drivers/vector_user.c b/arch/um/drivers/vector_user.c
index e831bd85cad4..2dee1e183387 100644
--- a/arch/um/drivers/vector_user.c
+++ b/arch/um/drivers/vector_user.c
@@ -384,9 +384,7 @@ static struct vector_fds *user_init_socket_fds(struct arglist *ifspec, int id)
 		goto cleanup;
 	}
 
-	if (gairesult != NULL)
-		freeaddrinfo(gairesult);
-
+	freeaddrinfo(gairesult);
 	gairesult = NULL;
 
 	gairet = getaddrinfo(dst, dstport, &dsthints, &gairesult);
@@ -416,8 +414,7 @@ static struct vector_fds *user_init_socket_fds(struct arglist *ifspec, int id)
 	freeaddrinfo(gairesult);
 	return result;
 cleanup:
-	if (gairesult != NULL)
-		freeaddrinfo(gairesult);
+	freeaddrinfo(gairesult);
 
 	if (fd >= 0)
 		os_close_file(fd);
-- 
2.16.2