From mboxrd@z Thu Jan  1 00:00:00 1970
From: tony@atomide.com (Tony Lindgren)
Date: Fri, 15 Nov 2013 08:11:37 -0800
Subject: [PATCH v2] ARM: OMAP4460: cpuidle: Extend
 PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD on cpuidle
In-Reply-To: <52864585.6030206@linaro.org>
References: <1382467484-16957-1-git-send-email-grygorii.strashko@ti.com>
 <5266CCE3.1090801@ti.com> <20131114183535.GL10317@atomide.com>
 <20131115153608.GX10317@atomide.com> <52864585.6030206@linaro.org>
Message-ID: <20131115161137.GY10317@atomide.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

* Taras Kondratiuk <taras.kondratiuk@linaro.org> [131115 08:03]:
> On 11/15/2013 05:36 PM, Tony Lindgren wrote:
> > * Tony Lindgren <tony@atomide.com> [131114 10:36]:
> >> * Grygorii Strashko <grygorii.strashko@ti.com> [131022 12:09]:
> >>> The same workaround as ff999b8a0983ee15668394ed49e38d3568fc6859
> >>> "ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC ..."
> >>> need to be applied not only when system is booting, but when MPUSS hits
> >>> OSWR state through CPUIdle too. Without this WA the same issue is
> >>> reproduced now on boards PandaES and Tablet/Blaze with SOM OMAP4460
> >>> when CONFIG_CPU_IDLE is enabled.
> >>> After MPUSS has enterred OSWR and waken up:
> >>> - GIC distributor became disabled forever
> >>> - scheduling is not performed any more
> >>>
> >>> Cc: Kevin Hilman <khilman@linaro.org>
> >>> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
> >>> Reported-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
> >>> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
> >>
> >> Applying into omap-for-v3.13/fixes thanks.
> > 
> > Hmm looks like this breaks the build with randconfigs at least
> > with the attached .config, so dropping for now.
> 
> Hi Tony
> Have you forgot to attach .config?

Oops, sorry looks like I removed it already as I rebuilt the tree
and started a new set of randconfig build tests.
 
> > arch/arm/mach-omap2/built-in.o: In function `omap_enter_idle_coupled':
> > :(.text+0xb48c): undefined reference to `pm44xx_errata'
> 
> I assume that .config doesn't have CONFIG_SMP enabled while
> pm44xx_errata is defined in omap-smp.c.
> I think it should be a separate patch to move pm44xx_errata somewhere
> else, so this patch will remain the same.

Yes something like that probably. Sounds like that should be then
patches before this fix.
 
> Btw, do we need omap_enter_idle_coupled() in UP?

That should be checked, am43xx may need it.

Regards,

Tony