[PATCH] watchdog: bcm2835_wdt: Fix WDIOC_SETTIMEOUT handling

Stefan Wahren wahrenst at gmx.net
Thu Nov 30 03:57:31 PST 2023


Hi,

Am 13.11.23 um 15:31 schrieb Guenter Roeck:
> On Sun, Nov 12, 2023 at 06:32:51PM +0100, Stefan Wahren wrote:
>> Users report about the unexpected behavior for setting timeouts above
>> 15 sec on Raspberry Pi. According to watchdog-api.rst the ioctl
>> WDIOC_SETTIMEOUT shouldn't fail because of hardware limitations.
>> But looking at the code shows that max_timeout based on the
>> register value PM_WDOG_TIME_SET, which is the maximum.
>>
>> Since 664a39236e71 ("watchdog: Introduce hardware maximum heartbeat
>> in watchdog core") the watchdog core is able to handle this problem.
>>
>> This fix has been tested with watchdog-test from selftests.
>>
>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217374
>> Fixes: 664a39236e71 ("watchdog: Introduce hardware maximum heartbeat in watchdog core")
>> Signed-off-by: Stefan Wahren <wahrenst at gmx.net>
> Reviewed-by: Guenter Roeck <linux at roeck-us.net>
who takes care of this patch?



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