From: Tony Lindgren <tony@atomide.com>
To: Nishanth Menon <nm@ti.com>
Cc: santosh shilimkar <santosh.shilimkar@oracle.com>,
Stefan Hengelein <stefan.hengelein@fau.de>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
linux@arm.linux.org.uk, gregkh@linuxfoundation.org
Subject: Re: [PATCH] ARM: OMAP4: remove dead kconfig option OMAP4_ERRATA_I688
Date: Tue, 17 Mar 2015 09:34:40 -0700 [thread overview]
Message-ID: <20150317163440.GC31346@atomide.com> (raw)
In-Reply-To: <550856FF.9080702@ti.com>
* Nishanth Menon <nm@ti.com> [150317 09:32]:
> On 03/17/2015 11:26 AM, santosh shilimkar wrote:
> >
> >
> > On 3/16/2015 4:30 PM, Tony Lindgren wrote:
> >> * Stefan Hengelein <stefan.hengelein@fau.de> [150225 10:48]:
> >>> The Kconfig-Option OMAP4_ERRATA_I688 is never visible due to a
> >>> contradiction in it's dependencies.
> >>> The option requires ARCH_MULTIPLATFORM to be 'disabled'. However, an
> >>> enclosing menu requires either ARCH_MULTI_V6 or ARCH_MULTI_V7 to be
> >>> enabled. These options inherit a dependency from an enclosing menu,
> >>> that requires ARCH_MULTIPLATFORM to be 'enabled'.
> >>> This is a contradiction and made this option also unavailable for
> >>> non-multiplatform configurations.
> >>>
> >>> Since there are no selects on OMAP4_ERRATA_I688, which would ignore
> >>> dependencies, the code related to that option is dead and can be
> >>> removed.
> >>>
> >>> This (logical) defect has been found with the undertaker tool.
> >>> (https://undertaker.cs.fau.de)
> >>>
> >>> Signed-off-by: Stefan Hengelein <stefan.hengelein@fau.de>
> >>>
> >>> ---
> >>> Tony Lindgren suggested to remove the code since nobody complained for
> >>> a few years and Santosh Shilimkar agreed.
> >>> https://lkml.org/lkml/2015/2/25/449
> >>> ---
> >>> As far as I see, this should remove all the code related to
> >>> OMAP4_ERRATA_I688, I hope I didn't remove too much.
> >>
> >> Seems to boot fine, so applying into omap-for-v4.1/fixes-not-urgent.
> >>
> > Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
>
> We no longer need i688? I do understand the need to cleanup the macros
> for multi-arch etc.. but loosing a bug workaround for a real silicon
> bug is really an invitation for hard to debug issues IMHO.
Well that code has not been selectable for a few years now. Naturally
we can add it back when it actually does something with multiarch.
Regards,
Tony
WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: OMAP4: remove dead kconfig option OMAP4_ERRATA_I688
Date: Tue, 17 Mar 2015 09:34:40 -0700 [thread overview]
Message-ID: <20150317163440.GC31346@atomide.com> (raw)
In-Reply-To: <550856FF.9080702@ti.com>
* Nishanth Menon <nm@ti.com> [150317 09:32]:
> On 03/17/2015 11:26 AM, santosh shilimkar wrote:
> >
> >
> > On 3/16/2015 4:30 PM, Tony Lindgren wrote:
> >> * Stefan Hengelein <stefan.hengelein@fau.de> [150225 10:48]:
> >>> The Kconfig-Option OMAP4_ERRATA_I688 is never visible due to a
> >>> contradiction in it's dependencies.
> >>> The option requires ARCH_MULTIPLATFORM to be 'disabled'. However, an
> >>> enclosing menu requires either ARCH_MULTI_V6 or ARCH_MULTI_V7 to be
> >>> enabled. These options inherit a dependency from an enclosing menu,
> >>> that requires ARCH_MULTIPLATFORM to be 'enabled'.
> >>> This is a contradiction and made this option also unavailable for
> >>> non-multiplatform configurations.
> >>>
> >>> Since there are no selects on OMAP4_ERRATA_I688, which would ignore
> >>> dependencies, the code related to that option is dead and can be
> >>> removed.
> >>>
> >>> This (logical) defect has been found with the undertaker tool.
> >>> (https://undertaker.cs.fau.de)
> >>>
> >>> Signed-off-by: Stefan Hengelein <stefan.hengelein@fau.de>
> >>>
> >>> ---
> >>> Tony Lindgren suggested to remove the code since nobody complained for
> >>> a few years and Santosh Shilimkar agreed.
> >>> https://lkml.org/lkml/2015/2/25/449
> >>> ---
> >>> As far as I see, this should remove all the code related to
> >>> OMAP4_ERRATA_I688, I hope I didn't remove too much.
> >>
> >> Seems to boot fine, so applying into omap-for-v4.1/fixes-not-urgent.
> >>
> > Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
>
> We no longer need i688? I do understand the need to cleanup the macros
> for multi-arch etc.. but loosing a bug workaround for a real silicon
> bug is really an invitation for hard to debug issues IMHO.
Well that code has not been selectable for a few years now. Naturally
we can add it back when it actually does something with multiarch.
Regards,
Tony
next prev parent reply other threads:[~2015-03-17 16:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-25 18:44 [PATCH] ARM: OMAP4: remove dead kconfig option OMAP4_ERRATA_I688 Stefan Hengelein
2015-02-25 18:44 ` Stefan Hengelein
2015-03-16 23:30 ` Tony Lindgren
2015-03-16 23:30 ` Tony Lindgren
2015-03-17 16:26 ` santosh shilimkar
2015-03-17 16:26 ` santosh shilimkar
2015-03-17 16:31 ` Nishanth Menon
2015-03-17 16:31 ` Nishanth Menon
2015-03-17 16:31 ` Nishanth Menon
2015-03-17 16:34 ` Tony Lindgren [this message]
2015-03-17 16:34 ` Tony Lindgren
2015-03-17 16:57 ` Nishanth Menon
2015-03-17 16:57 ` Nishanth Menon
2015-03-17 17:10 ` Tony Lindgren
2015-03-17 17:10 ` Tony Lindgren
2015-03-17 17:18 ` Nishanth Menon
2015-03-17 17:18 ` Nishanth Menon
2015-03-17 17:27 ` Tony Lindgren
2015-03-17 17:27 ` Tony Lindgren
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