Question about VEXPRESS being "selected" for multiplatform kernels, panicking vexpress_sysreg_init_leds

[Matt Sealey]

Everyone who is fairly reasonably ignoring this mail may continue to do so!
Seems GMail is having problems with the list. I got a mail saying it was
awaiting moderator approval and only in making sure the mail did hit the
list did I see a month of mails pop up and Fabio and Olof solving this
issue already. Seems we got a halfway merged tree thing going on and this
is all our fault.

Matt Sealey <matt at genesi-usa.com>
Product Development Analyst, Genesi USA, Inc.


On Wed, Dec 19, 2012 at 12:02 PM, Matt Sealey <matt at genesi-usa.com> wrote:

> Hey guys,
>
> I can't find a good explanation for it, so I'm asking here; why is
> vexpress selected by the multiplatform kernel option?
>
> I can't see any particular reason except that it pulls in a ton of select
> items which would be fairly common for multiplatform kernel, although in
> our use case (i.MX) all the relevant common options (CPU_V7, COMMON_CLK
> etc.) are selected through the proper arch support.
>
> We're getting some weird panics from a function we can't find and the
> simplest way we can think of to get rid of them are don't compile in
> vexpress - I would like to upstream this (I can't think of any reason
> multiplatform would *depend* on the vexpress-specific parts) but I would
> like to know the impact of what I am thinking of doing before I think about
> it further.
>
> BTW the panics are in vexpress_sysreg_init_leds - which is a function I
> can't find at all in the kernel. I don't know how on earth this function
> could ever be being called, but it started coming up simply because we put
> "loglevel=N" on the kernel line (where N is whatever we wanted it to be for
> the correct loglevel of course). Since I can't find the function, I am at a
> loss why this even comes up. It seems it got removed about a month ago....
>
> Assuming the Mayans are causing kernel errors for us or something's not
> being cleaned up properly, I think we can get around the panic eventually,
> but I still would really like to remove the dependency on a specific
> platform which would be the true fix to "vexpress init does odd things on
> boot if you're not running vexpress" problem for people who have custom
> multiplatform kernels.
>
> --
> Matt Sealey <matt at genesi-usa.com>
> Product Development Analyst, Genesi USA, Inc.
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20121219/9bde693b/attachment-0001.html>