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From a497875b691e68fd44cdb4110d9bf0e87ff80e98 Mon Sep 17 00:00:00 2001
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Mon, 26 Jul 2021 13:46:13 +0200
Subject: [PATCH 2/3] watchdog: iTCO_wdt: Fix detection of SMI-off case
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Obviously, the test needs to run against the register content, not its
address.
Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout")
Cc: stable@vger.kernel.org
Reported-by: Mantas Mikulėnas <grawity@gmail.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Mantas Mikulėnas <grawity@gmail.com>
Link: https://lore.kernel.org/r/d84f8e06-f646-8b43-d063-fb11f4827044@siemens.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Fixes: https://bugs.archlinux.org/task/72045 (?)
---
drivers/watchdog/iTCO_wdt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index b3f604669e2c..643c6c2d0b72 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -362,7 +362,7 @@ static int iTCO_wdt_set_timeout(struct watchdog_device *wd_dev, unsigned int t)
* Otherwise, the BIOS generally reboots when the SMI triggers.
*/
if (p->smi_res &&
- (SMI_EN(p) & (TCO_EN | GBL_SMI_EN)) != (TCO_EN | GBL_SMI_EN))
+ (inl(SMI_EN(p)) & (TCO_EN | GBL_SMI_EN)) != (TCO_EN | GBL_SMI_EN))
tmrval /= 2;
/* from the specs: */
--
2.33.0
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