linux-kernel - Re: [PATCH 1/2] Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context

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Date:	Thu, 17 Oct 2013 09:45:39 -0400
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	Grygorii Strashko <grygorii.strashko@...com>
CC:	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Tony Lindgren <tony@...mide.com>,
	open list <linux-kernel@...r.kernel.org>,
	linux-arm <linux-arm-kernel@...ts.infradead.org>,
	Kevin Hilman <khilman@...aro.org>,
	Taras Kondratiuk <taras.kondratiuk@...aro.org>
Subject: Re: [PATCH 1/2] Revert "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()"

On Thursday 17 October 2013 05:24 AM, Grygorii Strashko wrote:
> The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
> "ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC control register change."
> need to be applied not only when system is booting, but when MPU hits OSWR state through CPUIdle too.
> 
> Unfortunately, commit "ARM: OMAP4+: CPUidle: Deprecate use of
> omap4_mpuss_read_prev_context_state()" prevents us from implementing workaround
> for this ROM code bug, because it should be applied only (and only)
> when MPU really hits OSWR and its was lost context.
> 
> Hence revert commit e7457253494fff660a72bc0cedeee97491ccd173
> "ARM: OMAP4+: CPUidle: Deprecate use of omap4_mpuss_read_prev_context_state()".
> 
> Cc: Santosh Shilimkar <santosh.shilimkar@...com>
> Cc: Kevin Hilman <khilman@...aro.org>
> Reported-and-Tested-by: Taras Kondratiuk <taras.kondratiuk@...aro.org>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
> ---
NAK.. Lets not add this which will make the code
movement to drivers/idle difficult. This can be handled..
See comments on 2/2.

Regards,
Santosh

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