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Re: [PATCH v2 27/45] mfd: ntxec: Use devm_register_power_handler()
- To: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
- From: Dmitry Osipenko <digetx@xxxxxxxxx>
- Date: Sun, 7 Nov 2021 19:53:00 +0300
- Cc: Thierry Reding <thierry.reding@xxxxxxxxx>, Jonathan Hunter <jonathanh@xxxxxxxxxx>, Lee Jones <lee.jones@xxxxxxxxxx>, "Rafael J . Wysocki" <rafael@xxxxxxxxxx>, Mark Brown <broonie@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Guenter Roeck <linux@xxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, Ulf Hansson <ulf.hansson@xxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Greg Ungerer <gerg@xxxxxxxxxxxxxx>, Joshua Thompson <funaho@xxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Nick Hu <nickhu@xxxxxxxxxxxxx>, Greentime Hu <green.hu@xxxxxxxxx>, Vincent Chen <deanbo422@xxxxxxxxx>, Helge Deller <deller@xxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Paul Mackerras <paulus@xxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Len Brown <lenb@xxxxxxxxxx>, Santosh Shilimkar <ssantosh@xxxxxxxxxx>, Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>, Linus Walleij <linus.walleij@xxxxxxxxxx>, Chen-Yu Tsai <wens@xxxxxxxx>, Tony Lindgren <tony@xxxxxxxxxxx>, Liam Girdwood <lgirdwood@xxxxxxxxx>, Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>, Vladimir Zapolskiy <vz@xxxxxxxxx>, Avi Fishman <avifishman70@xxxxxxxxx>, Tomer Maimon <tmaimon77@xxxxxxxxx>, Tali Perry <tali.perry1@xxxxxxxxx>, Patrick Venture <venture@xxxxxxxxxx>, Nancy Yuen <yuenn@xxxxxxxxxx>, Benjamin Fair <benjaminfair@xxxxxxxxxx>, Pavel Machek <pavel@xxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, linux-omap@xxxxxxxxxxxxxxx, openbmc@xxxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx
- Delivery-date: Sun, 07 Nov 2021 16:53:44 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
06.11.2021 23:54, Jonathan Neuschäfer пишет:
> Hi,
>
> On Thu, Oct 28, 2021 at 12:16:57AM +0300, Dmitry Osipenko wrote:
>> Use devm_register_power_handler() that replaces global pm_power_off
>> variable and allows to register multiple power-off handlers. It also
>> provides restart-handler support, i.e. all in one API.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
>> ---
>
> When I boot with (most of) this patchset applied, I get the warning at
> kernel/reboot.c:187:
>
> /*
> * Handler must have unique priority. Otherwise call order is
> * determined by registration order, which is unreliable.
> */
> WARN_ON(!atomic_notifier_has_unique_priority(&restart_handler_list,
> nb));
>
> As the NTXEC driver doesn't specify a priority, I think this is an issue
> to be fixed elsewhere.
>
> Other than that, it works and looks good, as far as I can tell.
>
>
> For this patch:
>
> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
> Tested-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
Thank you. You have conflicting restart handlers, apparently NTXEC
driver should have higher priority than the watchdog driver. It should
be a common problem for the watchdog drivers, I will lower watchdog's
default priority to fix it.
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