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watchdog: iTCO_wdt: Fix detection of SMI-off case

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Obviously, the test needs to run against the register content, not its
address.

Fixes: cb011044e3 ("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>
This commit is contained in:
Jan Kiszka 2021-07-26 13:46:13 +02:00 committed by Wim Van Sebroeck
parent a4f95810e3
commit aec42642d9
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/iTCO_wdt.c
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@ -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: */