From 2a53883af96a6467ce1ff6d450832447c777589f Mon Sep 17 00:00:00 2001
From: yidong0635 <dongx.yi@intel.com>
Date: Thu, 22 Oct 2020 11:35:17 -0400
Subject: [PATCH] env_dpdk/memory: Fix warning of scanbuild.

We can verify readdir(dir) directly.
And this fixes issue :
memory.c:1233:23: warning: Although the value stored to 'd'
 is used in the enclosing expression, the value is never
actually read from 'd'
        while (count < 3 && (d = readdir(dir)) != NULL) {
                             ^   ~~~~~~~~~~~~

Signed-off-by: yidong0635 <dongx.yi@intel.com>
Change-Id: I34b191c9f89d8ae67697ec8e331f9c7c78c16ab2
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4819
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: John Kariuki <John.K.Kariuki@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 lib/env_dpdk/memory.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/env_dpdk/memory.c b/lib/env_dpdk/memory.c
index 8670c30ec..22c202c93 100644
--- a/lib/env_dpdk/memory.c
+++ b/lib/env_dpdk/memory.c
@@ -1222,7 +1222,6 @@ vfio_enabled(void)
 static bool
 has_iommu_groups(void)
 {
-	struct dirent *d;
 	int count = 0;
 	DIR *dir = opendir("/sys/kernel/iommu_groups");
 
@@ -1230,7 +1229,7 @@ has_iommu_groups(void)
 		return false;
 	}
 
-	while (count < 3 && (d = readdir(dir)) != NULL) {
+	while (count < 3 && readdir(dir) != NULL) {
 		count++;
 	}