From: Nishanth Menon <nm@ti.com>
To: Jean Pihet <jean.pihet@newoldbits.com>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Kevin Hilman <khilman@ti.com>,
balbi@ti.com, Jean Pihet <j-pihet@ti.com>
Subject: Re: [PATCH 04/13] ARM: OMAP3+: SmartReflex: Add a shutdown hook
Date: Wed, 29 Feb 2012 16:53:12 -0600 [thread overview]
Message-ID: <20120229225310.GA7400@kobold> (raw)
In-Reply-To: <1330554829-11347-5-git-send-email-j-pihet@ti.com>
On 23:33-20120229, Jean Pihet wrote:
> From: Nishanth Menon <nm@ti.com>
>
> SmartReflex fix for erratum ID i724.
>
> Since OMAP's VP and PRM modules do not get reset by warm reset,
> we should ensure that proper shutdown procedure is followed prior
> to allowing the kernel to reboot back up.
>
Considering [1], can we rephrase the following?
> Without this patch, Smartreflex module might be left active or
IMHO, the word "patch" is redundant :)
> system might be caught in an indeterminate sequence when reboot
when software controlled reboot is triggered
> is triggered, leaving the next reboot behavior to be unpredictable.
In the case of hardware controlled warm reset such as that by watchdog
timer, prevention of this scenario is not possible.
[..]
--
Regards,
Nishanth Menon
[1] http://marc.info/?l=linux-omap&m=133053887101828&w=2
WARNING: multiple messages have this Message-ID (diff)
From: nm@ti.com (Nishanth Menon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/13] ARM: OMAP3+: SmartReflex: Add a shutdown hook
Date: Wed, 29 Feb 2012 16:53:12 -0600 [thread overview]
Message-ID: <20120229225310.GA7400@kobold> (raw)
In-Reply-To: <1330554829-11347-5-git-send-email-j-pihet@ti.com>
On 23:33-20120229, Jean Pihet wrote:
> From: Nishanth Menon <nm@ti.com>
>
> SmartReflex fix for erratum ID i724.
>
> Since OMAP's VP and PRM modules do not get reset by warm reset,
> we should ensure that proper shutdown procedure is followed prior
> to allowing the kernel to reboot back up.
>
Considering [1], can we rephrase the following?
> Without this patch, Smartreflex module might be left active or
IMHO, the word "patch" is redundant :)
> system might be caught in an indeterminate sequence when reboot
when software controlled reboot is triggered
> is triggered, leaving the next reboot behavior to be unpredictable.
In the case of hardware controlled warm reset such as that by watchdog
timer, prevention of this scenario is not possible.
[..]
--
Regards,
Nishanth Menon
[1] http://marc.info/?l=linux-omap&m=133053887101828&w=2
next prev parent reply other threads:[~2012-02-29 22:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-29 22:33 [PATCH v5 00/13] ARM: OMAP3+: SmartReflex: bugfixes and clean-ups Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 01/13] ARM: OMAP3+: SmartReflex: use voltage domain name in device attributes Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 02/13] ARM: OMAP3+: SmartReflex: fix err interrupt disable sequence Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 03/13] ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 04/13] ARM: OMAP3+: SmartReflex: Add a shutdown hook Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:53 ` Nishanth Menon [this message]
2012-02-29 22:53 ` Nishanth Menon
2012-02-29 23:29 ` Jean Pihet
2012-02-29 23:29 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 05/13] ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 06/13] ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 07/13] ARM: OMAP3+: hwmod: add SmartReflex IRQs Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 08/13] ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata() Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 09/13] ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 10/13] ARM: OMAP3+: SmartReflex: misc cleanups Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 11/13] ARM: OMAP3+: SmartReflex: micro-optimization for sanity check Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 12/13] ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API Jean Pihet
2012-02-29 22:33 ` Jean Pihet
2012-02-29 22:33 ` [PATCH 13/13] ARM: OMAP3+: SmartReflex: fix error handling Jean Pihet
2012-02-29 22:33 ` Jean Pihet
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