[U-Boot] [PATCH 1/2] configs: Resync with savedefconfig

Tom Rini trini at konsulko.com
Fri Sep 9 23:14:25 CEST 2016


On Fri, Sep 09, 2016 at 03:06:01PM -0600, Stephen Warren wrote:
> On 09/09/2016 01:11 PM, Tom Rini wrote:
> >On Fri, Sep 09, 2016 at 01:09:43PM -0600, Stephen Warren wrote:
> >>On 09/09/2016 01:02 PM, Tom Rini wrote:
> >>>On Fri, Sep 09, 2016 at 10:21:45AM -0600, Stephen Warren wrote:
> >>>>On 09/08/2016 07:19 PM, Tom Rini wrote:
> >>>>>Signed-off-by: Tom Rini <trini at konsulko.com>
> >>>/bin/bash: ess: command not found
> >>>>>diff --git a/configs/harmony_defconfig b/configs/harmony_defconfig
> >>>>
> >>>>>-CONFIG_USE_PRIVATE_LIBGCC=y
> >>>>
> >>>>I assume that's because =y is the default for that now?
> >>>
> >>>Yes.
> >>
> >>>>>diff --git a/configs/p2771-0000-500_defconfig b/configs/p2771-0000-500_defconfig
> >>>>
> >>>>>-CONFIG_TARGET_P2771_0000=y
> >>>>
> >>>>I think we need to keep those two. Those two defconfigs are slightly
> >>>>different configurations of U-Boot's p2771-0000 board/target.
> >>>
> >>>OK, then you need to submit a patch to fix the underlying problem, if
> >>>there is one, really.  Keep in mind that what this is, is re-running
> >>>savedefconfig for each target.  So if something odd drops out that means
> >>>that it wasn't having any effect before.
> >>
> >>I don't believe there is any underlying problem. The Kconfig option
> >>in question is defined in arch/arm/mach-tegra/tegra186/Kconfig, when
> >>building for p2771-0000-000 the option makes it into .config just
> >>fine, and the value is used by board/nvidia/p2771-0000/Kconfig.
> >>Isn't this a bug in savedefconfig? I'm CC'ing Masahiro to get some
> >>insight.
> >
> >It is the default value then and isn't saved is I believe the answer.
> 
> I don't think it's the default; nothing selects that option and it
> has no "default y".
> 
> Or maybe since the value is inside a choice, and is the only entry
> that's there, that does make it the default? If so, that seems a
> little fragile; what if someone comes along and adds a new board
> into the list, and puts it before the existing entry (e.g. to
> maintain alphabetical sorting). That would changing the meaning of
> the current defconfig file if the first entry is picked as default.
> If so, I'm surprised if nobody has had that issue yet.

It's all correct and I think we have had this hit once or twice when
adding or changing the order.  It is a side effect of how Kconfig just
works.

-- 
Tom
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