[ethtool PATCH v2 02/12] ethtool.c: don't ignore fread() return value

[David Decotigny]

From: David Decotigny <de...@googlers.com>

This addresses:
  ethtool.c:1116:8: warning: ignoring return value of ‘fread’, declared with 
attribute warn_unused_result [-Wunused-result]


Signed-off-by: David Decotigny <de...@googlers.com>
---
 ethtool.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ethtool.c b/ethtool.c
index 92c40b8..8a93dd1 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -1007,6 +1007,7 @@ static int dump_regs(int gregs_dump_raw, int 
gregs_dump_hex,
        if (gregs_dump_file) {
                FILE *f = fopen(gregs_dump_file, "r");
                struct stat st;
+               size_t nread;
 
                if (!f || fstat(fileno(f), &st) < 0) {
                        fprintf(stderr, "Can't open '%s': %s\n",
@@ -1016,8 +1017,10 @@ static int dump_regs(int gregs_dump_raw, int 
gregs_dump_hex,
 
                regs = realloc(regs, sizeof(*regs) + st.st_size);
                regs->len = st.st_size;
-               fread(regs->data, regs->len, 1, f);
+               nread = fread(regs->data, regs->len, 1, f);
                fclose(f);
+               if (1 != nread)
+                       return -1;
        }
 
        if (!gregs_dump_hex)
-- 
2.7.0.rc3.207.g0ac5344