[PATCH 5.14 058/432] watchdog: iTCO_wdt: Fix detection of SMI-off case

[Greg Kroah-Hartman]

From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>

commit aec42642d91fc86ddc03e97f0139c6c34ee6b6b1 upstream.

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@xxxxxxxxxxxxxxx
Reported-by: Mantas Mikulėnas <grawity@xxxxxxxxx>
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Tested-by: Mantas Mikulėnas <grawity@xxxxxxxxx>
Link: https://lore.kernel.org/r/d84f8e06-f646-8b43-d063-fb11f4827044@xxxxxxxxxxx
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/watchdog/iTCO_wdt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -362,7 +362,7 @@ static int iTCO_wdt_set_timeout(struct w
 	 * 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: */