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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Johan Hovold <johan@kernel.org>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
	"Felipe Balbi" <balbi@ti.com>,
	"Alessandro Zummo" <a.zummo@towertech.it>,
	"Tony Lindgren" <tony@atomide.com>,
	"Benoît Cousson" <bcousson@baylibre.com>,
	"Lokesh Vutla" <lokeshvutla@ti.com>,
	"Guenter Roeck" <linux@roeck-us.net>,
	nsekhar@ti.com, t-kristo@ti.com, j-keerthy@ti.com,
	linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	devicetree@vger.kernel.org, rtc-linux@googlegroups.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 00/20] rtc: omap: fixes and power-off feature
Date: Tue, 28 Oct 2014 08:47:46 +0000	[thread overview]
Message-ID: <20141028084745.GY12379@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20141028081616.GL2006@localhost>

On Tue, Oct 28, 2014 at 09:16:16AM +0100, Johan Hovold wrote:
> It looks like we're soon to be having power-off call chains, with
> configurable priorities, to shut of various parts of the hardware

I really hope that they *don't* get used like that.  I guess this is
what happens when people don't read the code before they decide to
implement something.

All the reboot/power off/halt methods already call into the driver model,
and the driver model then iterates over all bound drivers calling their
"shutdown" method.  So, today, as it has been for years, all device
drivers are notified of system power off.

That's where most device drivers should be cleanly stopping their
hardware.

The only thing which is left is the actual hardware triggering of the
action, and that should be what's done via the notifier.

-- 
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.

  reply	other threads:[~2014-10-28  8:47 UTC|newest]

Thread overview: 113+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-09 19:06 [PATCH 00/12] rtc: omap: fixes and power-off feature Johan Hovold
2014-10-09 19:06 ` [PATCH 01/12] rtc: omap: fix clock-source configuration Johan Hovold
2014-10-10 17:55   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 02/12] rtc: omap: fix missing wakealarm attribute Johan Hovold
2014-10-10 17:55   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 03/12] rtc: omap: fix class-device registration Johan Hovold
2014-10-10 17:59   ` Felipe Balbi
2014-10-11  9:59     ` Johan Hovold
2014-10-13 15:57       ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 04/12] rtc: omap: remove unused register-base define Johan Hovold
2014-10-10 17:59   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 05/12] rtc: omap: remove redundant debug message Johan Hovold
2014-10-10 17:59   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 06/12] rtc: omap: use dev_info and dev_dbg Johan Hovold
2014-10-10 18:00   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 07/12] rtc: omap: silence bogus power-up reset message at probe Johan Hovold
2014-10-10 18:00   ` Felipe Balbi
2014-10-10 18:02     ` Felipe Balbi
2014-10-11 10:20       ` Johan Hovold
2014-10-12  0:50         ` Felipe Balbi
2014-10-12 18:42           ` Johan Hovold
2014-10-13 15:56             ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 08/12] rtc: omap: restore irq state after reading TC registers Johan Hovold
2014-10-10 18:02   ` Felipe Balbi
2014-10-11 10:12     ` Johan Hovold
2014-10-12  0:47       ` Felipe Balbi
2014-10-22 10:50         ` Johan Hovold
2014-10-23 18:52           ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 09/12] rtc: omap: add support for pmic_power_en Johan Hovold
2014-10-10 18:07   ` Felipe Balbi
2014-10-11 10:31     ` Johan Hovold
2014-10-22 10:18     ` Johan Hovold
2014-10-23 18:52       ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 10/12] rtc: omap: enable wake-up from power off Johan Hovold
2014-10-10 18:08   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 11/12] ARM: dts: am33xx: update rtc node compatible property Johan Hovold
2014-10-10 18:08   ` Felipe Balbi
2014-10-09 19:06 ` [PATCH 12/12] ARM: dts: am335x-bone-common: enable power off and rtc wake up Johan Hovold
2014-10-10 18:09   ` Felipe Balbi
2014-10-11 10:34     ` Johan Hovold
2014-10-10 17:54 ` [PATCH 00/12] rtc: omap: fixes and power-off feature Felipe Balbi
2014-10-11  9:38   ` Johan Hovold
2014-10-11 19:08     ` Tony Lindgren
2014-10-22 11:07       ` Johan Hovold
2014-10-22 15:29         ` Tony Lindgren
2014-10-22 16:21           ` Johan Hovold
2014-10-22 16:43             ` Tony Lindgren
2014-10-15 16:55 ` Felipe Balbi
2014-10-15 17:06   ` Johan Hovold
2014-10-15 17:08     ` Felipe Balbi
2014-10-22 10:23       ` Johan Hovold
2014-10-23 18:55         ` Felipe Balbi
2014-10-24  7:58           ` Johan Hovold
2014-10-21 17:37 ` [PATCH v2 00/20] " Johan Hovold
     [not found]   ` <1413913086-12730-1-git-send-email-johan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-10-21 17:37     ` [PATCH v2 01/20] rtc: omap: fix clock-source configuration Johan Hovold
2014-10-21 17:37   ` [PATCH v2 02/20] rtc: omap: fix missing wakealarm attribute Johan Hovold
2014-10-21 17:37   ` [PATCH v2 03/20] rtc: omap: fix interrupt disable at probe Johan Hovold
2014-10-21 17:37   ` [PATCH v2 04/20] rtc: omap: clean up probe error handling Johan Hovold
2014-10-21 17:37   ` [PATCH v2 05/20] rtc: omap: fix class-device registration Johan Hovold
2014-10-21 17:37   ` [PATCH v2 06/20] rtc: omap: remove unused register-base define Johan Hovold
2014-10-21 17:37   ` [PATCH v2 07/20] rtc: omap: use dev_info Johan Hovold
2014-10-21 17:37   ` [PATCH v2 08/20] rtc: omap: make platform-device id table const Johan Hovold
2014-10-21 17:37   ` [PATCH v2 09/20] rtc: omap: add device abstraction Johan Hovold
2014-10-21 17:37   ` [PATCH v2 10/20] rtc: omap: remove DRIVER_NAME macro Johan Hovold
2014-10-21 17:37   ` [PATCH v2 11/20] rtc: omap: add structured device-type info Johan Hovold
2014-10-21 17:37   ` [PATCH v2 12/20] rtc: omap: silence bogus power-up reset message at probe Johan Hovold
2014-10-21 17:37   ` [PATCH v2 13/20] rtc: omap: add helper to read raw bcd time Johan Hovold
2014-10-21 17:38   ` [PATCH v2 14/20] rtc: omap: add helper to read 32-bit registers Johan Hovold
2014-10-21 17:38   ` [PATCH v2 15/20] rtc: omap: add support for pmic_power_en Johan Hovold
2014-10-21 17:38   ` [PATCH v2 16/20] rtc: omap: enable wake-up from power off Johan Hovold
2014-10-21 17:38   ` [PATCH v2 17/20] rtc: omap: fix minor coding style issues Johan Hovold
2014-10-21 17:38   ` [PATCH v2 18/20] rtc: omap: add copyright entry Johan Hovold
2014-10-21 17:38   ` [PATCH v2 19/20] ARM: dts: am33xx: update rtc-node compatible property Johan Hovold
2014-10-21 17:38   ` [PATCH v2 20/20] ARM: dts: am335x-boneblack: enable power off and rtc wake up Johan Hovold
2014-10-24 16:08   ` [PATCH v2 00/20] rtc: omap: fixes and power-off feature Felipe Balbi
2014-10-24 19:02     ` Johan Hovold
2014-10-24 19:25       ` Felipe Balbi
2014-10-24 19:29         ` Felipe Balbi
2014-10-24 19:36           ` Johan Hovold
2014-10-24 19:44             ` Felipe Balbi
2014-10-24 19:55               ` Johan Hovold
2014-10-24 20:08                 ` Felipe Balbi
2014-10-27 23:22                 ` Andrew Morton
2014-10-28  0:25                   ` Russell King - ARM Linux
     [not found]                     ` <20141028002552.GX12379-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2014-10-28  8:16                       ` Johan Hovold
2014-10-28  8:47                         ` Russell King - ARM Linux [this message]
2014-10-28 13:12                           ` Johan Hovold
2014-10-28 15:16                             ` Russell King - ARM Linux
2014-10-29 12:34                               ` Johan Hovold
2014-10-29 12:55                                 ` Romain Perier
     [not found]                                   ` <CABgxDo+ewxNwb3RrBVZA7kqYMvSujLb9U6A6FCvnHQH1W8V0kg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-29 13:00                                     ` Johan Hovold
2014-10-29 13:11                                       ` Romain Perier
2014-10-29 13:44                                         ` Johan Hovold
2014-10-29 13:10                                 ` Russell King - ARM Linux
2014-10-29 13:22                                   ` Johan Hovold
2014-10-29 15:25                                     ` Guenter Roeck
2014-10-29 15:51                                       ` Johan Hovold
2014-10-30 10:01                                         ` Johan Hovold
2014-10-29 13:20                                 ` Guenter Roeck
2014-10-29 13:35                                   ` Johan Hovold
2014-10-29 15:36                                     ` Guenter Roeck
2014-10-29 15:54                                       ` Johan Hovold
2014-10-27  8:09   ` [PATCH v3] rtc: omap: add support for pmic_power_en Johan Hovold
2014-10-27 16:45     ` Felipe Balbi
2014-10-27 16:56       ` Johan Hovold
2014-10-27 17:09         ` Felipe Balbi
2014-10-27 22:40     ` Andrew Morton
     [not found]       ` <20141027154031.4492ea11d401045ca04a3ff8-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2014-10-28  8:36         ` Johan Hovold
2014-10-28 21:18           ` Andrew Morton
2014-10-29 12:46             ` Johan Hovold
2014-10-29 12:50           ` Johan Hovold
2014-10-29 19:14             ` Andrew Morton
2014-10-30  9:55   ` [PATCH v4] " Johan Hovold

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