[PATCH] selftests/watchdog: fix WDIOC_GETSTATUS flag decoding

From: Chun-Cheng Chang

Date: Mon Aug 24 2026 - 12:28:54 EST


The wdiof_status table decodes WDIOC_GETSTATUS results and
watchdog_info.options, both of which use WDIOF_* flags.

It incorrectly contains WDIOS_* flags, which are only valid for
WDIOC_SETOPTIONS. Since the values overlap, status bits can be
reported as enable, disable, or temperature-panic operations.

Replace the WDIOS_* entries with the missing WDIOF_* status flags
and use WDIOF_UNKNOWN consistently.

Fixes: ac7e8d3e4a7c ("selftests/watchdog: add support for WDIOC_GETSTATUS")
Signed-off-by: Chun-Cheng Chang <frank0988855428@xxxxxxxxx>
---
.../selftests/watchdog/watchdog-test.c | 24 +++++++++++--------
1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/watchdog/watchdog-test.c b/tools/testing/selftests/watchdog/watchdog-test.c
index 4f09c5db0c7f..3802649b2944 100644
--- a/tools/testing/selftests/watchdog/watchdog-test.c
+++ b/tools/testing/selftests/watchdog/watchdog-test.c
@@ -106,24 +106,28 @@ struct wdiof_status {
const char *status_str;
};

-#define WDIOF_NUM_STATUS 8
+#define WDIOF_NUM_STATUS 12

static const struct wdiof_status wdiof_status[WDIOF_NUM_STATUS] = {
- {WDIOF_SETTIMEOUT, "Set timeout (in seconds)"},
- {WDIOF_MAGICCLOSE, "Supports magic close char"},
- {WDIOF_PRETIMEOUT, "Pretimeout (in seconds), get/set"},
- {WDIOF_ALARMONLY, "Watchdog triggers a management or other external alarm not a reboot"},
- {WDIOF_KEEPALIVEPING, "Keep alive ping reply"},
- {WDIOS_DISABLECARD, "Turn off the watchdog timer"},
- {WDIOS_ENABLECARD, "Turn on the watchdog timer"},
- {WDIOS_TEMPPANIC, "Kernel panic on temperature trip"},
+ {WDIOF_OVERHEAT, "Reset due to CPU overheat"},
+ {WDIOF_FANFAULT, "Fan failed"},
+ {WDIOF_EXTERN1, "External relay 1"},
+ {WDIOF_EXTERN2, "External relay 2"},
+ {WDIOF_POWERUNDER, "Power bad/power fault"},
+ {WDIOF_CARDRESET, "Card previously reset the CPU"},
+ {WDIOF_POWEROVER, "Power over voltage"},
+ {WDIOF_SETTIMEOUT, "Set timeout (in seconds)"},
+ {WDIOF_MAGICCLOSE, "Supports magic close char"},
+ {WDIOF_PRETIMEOUT, "Pretimeout (in seconds), get/set"},
+ {WDIOF_ALARMONLY, "Watchdog triggers a management or other external alarm not a reboot"},
+ {WDIOF_KEEPALIVEPING, "Keep alive ping reply"},
};

static void print_status(int flags)
{
int wdiof = 0;

- if (flags == WDIOS_UNKNOWN) {
+ if (flags == WDIOF_UNKNOWN) {
printf("Unknown status error from WDIOC_GETSTATUS\n");
return;
}
--
2.53.0