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SubjectRe: [PATCH] watchdog: iTCO_wdt: Fix detection of SMI-off case
On Mon, Jul 26, 2021 at 2:46 PM Jan Kiszka <jan.kiszka@siemens.com> wrote:
>
> From: Jan Kiszka <jan.kiszka@siemens.com>
>
> Obviously, the test needs to run against the register content, not its
> address.
>
> Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout")
> Reported-by: Mantas Mikulėnas <grawity@gmail.com>

> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Missed SoB of the submitter (hint: configure your Git to make sure
that submitter and author are the same in terms of name-email).

...

> 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;

There are so many parentheses, perhaps

#define TCO_GBL_SMI_EN (TCO_EN | GBL_SMI_EN)
...
if (p->smi_res &&
(inl(SMI_EN(p)) & TCO_GBL_SMI_EN) != TCO_GBL_SMI_EN)
tmrval /= 2;

?

--
With Best Regards,
Andy Shevchenko

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