regression: OMAP4 (next-20141204) (bisect to: ARM: 8208/1: l2c: Refactor the driver to use commit-like)

Tony Lindgren tony at
Mon Dec 22 09:08:49 PST 2014

* Russell King - ARM Linux <linux at> [141222 09:06]:
> On Thu, Dec 11, 2014 at 11:42:48AM +0100, Marek Szyprowski wrote:
> > On 2014-12-11 10:29, Russell King - ARM Linux wrote:
> > >On Wed, Dec 10, 2014 at 10:42:33AM +0100, Marek Szyprowski wrote:
> > >>I assume that now it won't be possible to get l2c patches back to -next,
> > >>so I will resend them (again...) with the omap related fix.
> > >What, you mean you don't know the fundamental rules of kernel development?
> > >
> > >No one should ever dump any new code into linux-next during a merge
> > >window which is not a fix for a regression or a bug fix, period.
> > >
> > >Linus has in the past taken a snapshot of linux-next at the beginning
> > >of a merge window, and then threatened to refuse to merge anything that
> > >wasn't in his local snapshot, or which doesn't qualify as the above.
> > >
> > >So no, it won't be possible, because I play by the community rules when
> > >it comes to what gets merged and at what time in the cycle.
> > 
> > I know the rules. It was just my whining, that it is yet another release
> > cycle
> > that got missed. It is really disappointing, that those patches have been
> > floating for months and noone found issues related to different order of
> > initialization. It took way to long to get them scheduled for testing in
> > -next.
> Right, so - we're now at -rc1, and we should see about queuing this up
> sooner rather than later - in its fixed form.  From what I can see,
> there's been little progress on the OMAP problem.
> Nishanth - can we push OMAP over to using the generic DT L2C
> initialisation (the one from init_IRQ in arch/arm/kernel/irq.c) and
> kill the SoC specific stuff in arch/arm/mach-omap2/omap4-common.c ?
> From what I can see, in the DT case, the only thing which is used
> there is the ioremap() to provide omap4_get_l2cache_base() with
> something to return.  Everything else - the initialisation of the
> l2c_write_sec pointer, and the aux mask and values - can be specified
> via the machine_desc struct.
> That only leaves the non-DT stuff to worry about this, and from what I
> understand, that's going to be removed soon.  If we're going to keep
> the non-DT stuff, we should implement a new machine_desc hook for it
> instead of hijacking one of the existing callbacks.

For omap4 and later we've been DT only for about 1.5 years now so
that should not be an issue here.



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