Re: Linux 5.16-rc3

[Guenter Roeck]

On 11/28/21 7:07 PM, Randy Dunlap wrote:
> On 11/28/21 17:59, Guenter Roeck wrote:
> > On Sun, Nov 28, 2021 at 02:21:20PM -0800, Linus Torvalds wrote:
> > > So rc3 is usually a bit larger than rc2 just because people had some
> > > time to start finding things.
> > >
> > > So too this time, although it's not like this is a particularly big
> > > rc3. Possibly partly due to the past week having been Thanksgiving
> > > week here in the US. But the size is well within the normal range, so
> > > if that's a factor, it's not been a big one.
> > >
> > > The diff for rc3 is mostly drivers, although part of that is just
> > > because of the removal of a left-over MIPS Netlogic driver which makes
> > > the stats look a bit wonky, and is over a third of the whole diff just
> > > in itself.
> > >
> > > If you ignore that part, the statistics look a bit more normal, but
> > > drivers still dominate (network drivers, sound and gpu are the big
> > > ones, but there is noise all over). Other than that there's once again
> > > a fair amount of selftest (mostly networking), along with core
> > > networking, some arch updates - the bulk of it from a single arm64
> > > uaccess patch, although that's mostly because it's all pretty small -
> > > and random other changes.
> > >
> > > Full shortlog below.
> > >
> > > Please test,
> >
> > Build results:
> >     total: 153 pass: 152 fail: 1
> > Failed builds:
> >     mips:allmodconfig
> > Qemu test results:
> >     total: 482 pass: 482 fail: 0
> >
> > Building mips:allmodconfig ... failed
> > --------------
> > Error log:
> > ERROR: modpost: missing MODULE_LICENSE() in drivers/pci/controller/pcie-mt7621.o
> > ERROR: modpost: "mips_cm_unlock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!
> > ERROR: modpost: "mips_cpc_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!
> > ERROR: modpost: "mips_cm_lock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!
> > ERROR: modpost: "mips_cm_is64" [drivers/pci/controller/pcie-mt7621.ko] undefined!
> > ERROR: modpost: "mips_gcr_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!
> >
> > There is still no fix for the mips:allmodconfig build problem as far
> > as I can see. It is a bit odd, because the fix would be as simple as
> >
> >   config PCIE_MT7621
> > -    tristate "MediaTek MT7621 PCIe Controller"
> > -    depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
> > +    bool "MediaTek MT7621 PCIe Controller"
> > +    depends on SOC_MT7621 || (MIPS && COMPILE_TEST)
> >       select PHY_MT7621_PCI
> >       default SOC_MT7621
> >       help
> >
> > Context: tristate doesn't make sense here because both RALINK and
> > SOC_MT7621 are bool. Also, RALINK is redundant because SOC_MT7621
> > already depends on it. The compile failure is due to missing exported
> > symbols, and it is only seen if PCIE_MT7621=m - which is only possible
> > if COMPILE_TEST=y. In other words, the dependencies above are set such
> > that test builds, and only test builds, fail.
> >
> > The problem was introduced with commit 2bdd5238e756 ("PCI: mt7621:
> > Add MediaTek MT7621 PCIe host controller driver"). Copying some of
> > those responsible to see if we can expect a solution sometime soon.
>
>
> I sent a patch for this a couple of weeks ago and Sergio replied to it
> here:
>
> https://lore.kernel.org/linux-pci/CAMhs-H8TA0S23FjSRKGKeKAWWdUxET6YnivLQoFuy_fSVJOPXw@xxxxxxxxxxxxxx/
>
> saying that is a different patch out there but that it had not
> been reviewed yet.

All proposals I have seen assume that PCIE_MT7621=m. As I said, I think
that it is pointless to do that because the driver can only be built
as module if COMPILE_TEST=y. We should not [have to] export symbols
because of that.

Guenter