From e3eceb76515910746e6268c4e4ac1c07516ebd7b Mon Sep 17 00:00:00 2001 From: Tzung-Bi Shih Date: Thu, 27 Aug 2026 04:46:59 +0000 Subject: [PATCH] watchdog: msc313e: Fix NULL pointer dereference in PM callbacks msc313e_wdt_probe() doesn't set the driver data for the platform device. As a result, dev_get_drvdata() in msc313e_wdt_suspend() and msc313e_wdt_resume() will return NULL, leading to a NULL pointer dereference afterward. Set the platform device driver data in msc313e_wdt_probe(). Fixes: e9800b799464 ("watchdog: Add Mstar MSC313e WDT driver") Signed-off-by: Tzung-Bi Shih Link: https://patch.msgid.link/20260827044700.554333-2-tzungbi@kernel.org Signed-off-by: Guenter Roeck --- drivers/watchdog/msc313e_wdt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/watchdog/msc313e_wdt.c b/drivers/watchdog/msc313e_wdt.c index d962589e2c55..f69d66971c41 100644 --- a/drivers/watchdog/msc313e_wdt.c +++ b/drivers/watchdog/msc313e_wdt.c @@ -124,6 +124,7 @@ static int msc313e_wdt_probe(struct platform_device *pdev) set_bit(WDOG_HW_RUNNING, &priv->wdev.status); watchdog_set_drvdata(&priv->wdev, priv); + platform_set_drvdata(pdev, priv); watchdog_init_timeout(&priv->wdev, timeout, dev); watchdog_stop_on_reboot(&priv->wdev);