From 73bab8e1a1dd93a90ffb5a39e4dc91f194a2f063 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20H=C3=B6ppner?= <hoeppner@linux.ibm.com>
Date: Mon, 20 May 2019 16:34:09 +0200
Subject: [PATCH] zpcictl: Fix compile warning
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zpcictl.c: In function ‘sysfs_read_value’:
zpcictl.c:154:2: warning: ignoring return value of ‘fscanf’, declared with
attribute warn_unused_result [-Wunused-result]
  fscanf(fp, "%x", &val);
  ^~~~~~~~~~~~~~~~~~~~~~

Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
---
 zpcictl/zpcictl.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/zpcictl/zpcictl.c b/zpcictl/zpcictl.c
index 7683e942..1c13ae01 100644
--- a/zpcictl/zpcictl.c
+++ b/zpcictl/zpcictl.c
@@ -151,7 +151,12 @@ static unsigned int sysfs_read_value(struct zpci_device *pdev, const char *attr)
 	fp = fopen(path, "r");
 	if (!fp)
 		fopen_err(path);
-	fscanf(fp, "%x", &val);
+	if (fscanf(fp, "%x", &val) != 1) {
+		fclose(fp);
+		warnx("Could not read file %s: %s", path, strerror(errno));
+		free(path);
+		exit(EXIT_FAILURE);
+	}
 	fclose(fp);
 	free(path);