selftests: watchdog: point out ioctl() failures

Report the failure of WDIOC_SETOPTIONS/WDIOC_SETTIMEOUT ioctls.

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c
index 5cfa88c7309517f306fefe547288934236bdad59..41f40c3c4d958f8af120289955980aedaefd5531 100644 (file)
--- a/tools/testing/selftests/watchdog/watchdog-test.c
+++ b/tools/testing/selftests/watchdog/watchdog-test.c
@@ -94,12 +94,16 @@ int main(int argc, char *argv[])
                        ret = ioctl(fd, WDIOC_SETOPTIONS, &flags);
                        if (!ret)
                                printf("Watchdog card disabled.\n");
+                       else
+                               printf("WDIOS_DISABLECARD errno '%s'\n", strerror(errno));
                        break;
                case 'e':
                        flags = WDIOS_ENABLECARD;
                        ret = ioctl(fd, WDIOC_SETOPTIONS, &flags);
                        if (!ret)
                                printf("Watchdog card enabled.\n");
+                       else
+                               printf("WDIOS_ENABLECARD errno '%s'\n", strerror(errno));
                        break;
                case 'p':
                        ping_rate = strtoul(optarg, NULL, 0);
@@ -110,6 +114,8 @@ int main(int argc, char *argv[])
                        ret = ioctl(fd, WDIOC_SETTIMEOUT, &flags);
                        if (!ret)
                                printf("Watchdog timeout set to %u seconds.\n", flags);
+                       else
+                               printf("WDIOC_SETTIMEOUT errno '%s'\n", strerror(errno));
                        break;
                default:
                        usage(argv[0]);