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From: Jan Kiszka <jan.kiszka@siemens.com>
To: Wim Van Sebroeck <wim@linux-watchdog.org>,
	Guenter Roeck <linux@roeck-us.net>
Cc: linux-watchdog@vger.kernel.org,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Christian Storm" <christian.storm@siemens.com>,
	"Andy Shevchenko" <andy.shevchenko@gmail.com>,
	"Mantas Mikulėnas" <grawity@gmail.com>
Subject: Re: [PATCH] watchdog: iTCO_wdt: Fix detection of SMI-off case
Date: Mon, 30 Aug 2021 21:47:44 +0200	[thread overview]
Message-ID: <85c2c85e-147c-b54e-e84d-10b989610979@siemens.com> (raw)
In-Reply-To: <1444efd5-b778-949b-34e8-99d2541350e9@siemens.com>

On 20.08.21 15:45, Jan Kiszka wrote:
> On 26.07.21 13:46, Jan Kiszka 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>
>> ---
>>  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: */
>>
> 
> Ping, this is still missing in master. Stable kernels had the revert,
> but 5.14 will need this.
> 

Second reminder: 5.14 is out and now broken. Is the patch queued
somewhere? I do not see it in the watchdog staging branch.

Jan

-- 
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux

  reply	other threads:[~2021-08-30 19:48 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-26 11:46 Jan Kiszka
2021-07-26 12:01 ` Andy Shevchenko
2021-07-26 12:04   ` Jan Kiszka
2021-07-26 13:40     ` Andy Shevchenko
2021-07-26 13:59       ` Guenter Roeck
2021-07-26 14:05         ` Jan Kiszka
2021-07-26 14:51           ` Andy Shevchenko
2021-07-26 17:10             ` Jan Kiszka
2021-07-26 21:45               ` Andy Shevchenko
2021-07-26 12:03 ` Paolo Bonzini
2021-07-26 12:05   ` Jan Kiszka
2021-07-26 13:51     ` Guenter Roeck
2021-07-26 13:44 ` Guenter Roeck
2021-07-26 16:59 ` Mantas Mikulėnas
2021-08-20 13:45 ` Jan Kiszka
2021-08-30 19:47   ` Jan Kiszka [this message]
2021-08-30 20:00     ` Guenter Roeck
2021-09-07 20:14       ` Wim Van Sebroeck

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