[PULL 05/59] hw/watchdog/wdt_imx2: Clear WDT lock on reset

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

From: Bernhard Beschow <shentey@gmail.com>

The WDT bit gets reset and becomes writeable after power on reset which
imx2_wdt_reset() represents. While the WDT bit in the WCR register
already gets reset, its locked attribute wasn't. Fix this inconsistency
by adding the missing unlock of its locked attribute.

Cc: qemu-stable@nongnu.org
Fixes: daca13d495a1 ("hw/watchdog: Implement full i.MX watchdog support")
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Bin Meng <bin.meng@processmission.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-ID: <20261006083445.30362-4-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 include/hw/watchdog/wdt_imx2.h | 2 +-
 hw/watchdog/wdt_imx2.c         | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/hw/watchdog/wdt_imx2.h b/include/hw/watchdog/wdt_imx2.h
index ad36b8820d84..fc01fc46e736 100644
--- a/include/hw/watchdog/wdt_imx2.h
+++ b/include/hw/watchdog/wdt_imx2.h
@@ -85,7 +85,7 @@ struct IMX2WdtState {
 
     bool wcr_locked;            /* affects WDZST, WDBG, and WDW */
     bool wcr_wde_locked;        /* affects WDE */
-    bool wcr_wdt_locked;        /* affects WDT (never cleared) */
+    bool wcr_wdt_locked;        /* affects WDT, cleared on POR */
 };
 
 #endif /* WDT_IMX2_H */
diff --git a/hw/watchdog/wdt_imx2.c b/hw/watchdog/wdt_imx2.c
index d897ff6e52b0..a15f452d4890 100644
--- a/hw/watchdog/wdt_imx2.c
+++ b/hw/watchdog/wdt_imx2.c
@@ -60,6 +60,7 @@ static void imx2_wdt_reset(DeviceState *dev)
     s->wicr_locked = false;
     s->wcr_locked = false;
     s->wcr_wde_locked = false;
+    s->wcr_wdt_locked = false;
 
     s->wcr = IMX2_WDT_WCR_WDA | IMX2_WDT_WCR_SRS;
     s->wsr = 0;
-- 
2.55.0