Re: [BUG BISECT] Missing MTD NAND partitions - mtd: rawnand: Move the ->exec_op() method to nand_controller_ops

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Hi Krzysztof,

Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote on Wed, 5 Dec 2018 17:10:38
+0100:

> On Tue, 20 Nov 2018 at 13:15, Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> >
> > On Tue, 20 Nov 2018 at 13:09, Boris Brezillon
> > <boris.brezillon@xxxxxxxxxxx> wrote:  
> > >
> > > On Tue, 20 Nov 2018 12:48:46 +0100
> > > Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> > >  
> > > > On Tue, 20 Nov 2018 at 11:33, Miquel Raynal <miquel.raynal@xxxxxxxxxxx> wrote:  
> > > > >
> > > > > Hi Krzysztof,
> > > > >
> > > > > Krzysztof Kozłowski <k.kozlowski.k@xxxxxxxxx> wrote on Tue, 20 Nov 2018
> > > > > 10:46:33 +0100:
> > > > >  
> > > > > > Hi all,
> > > > > >
> > > > > > Since few days linux-next has problem on Freescale VF500 - MTD seems
> > > > > > to be broken.
> > > > > >
> > > > > > Bisect pointed me to commit 7c27338c728e39ef47c83d101959aa332506969d
> > > > > > ("mtd: rawnand: Move the ->exec_op() method to nand_controller_ops")
> > > > > > as reason of failure to find MTD partitions.
> > > > > >
> > > > > > Toradex Colibri VF50 on Iris board (ARMv7, UP, Cortext-A5, NXP VF500,
> > > > > > 128 MB RAM, 128 MB NAND, Systemd: v232) booted from NFS root (NFSv4)
> > > > > > trying to mount UBIFS from NAND/MTD. Board uses VF610 NAND driver.
> > > > > >
> > > > > > The MTD partitions are missing entirely (nothing under /dev/mtd).
> > > > > > In the logs you can also see:
> > > > > > [    1.232161] UBI error: cannot open mtd ubi2, error -2
> > > > > >
> > > > > > Attached - dmesg.log
> > > > > >
> > > > > > Let me know if you need defconfig or any other information.  
> > > > >
> > > > > Thank you very much for testing and reporting the bug!
> > > > >
> > > > > Could you please test with this diff applied [1] please? We discussed
> > > > > with Boris and we think it should fix your setup (and all others also
> > > > > impacted).
> > > > >
> > > > > [1] http://code.bulix.org/r1m99i-509201  
> > > >
> > > > error: patch failed: drivers/mtd/nand/raw/nand_base.c:4399
> > > > error: drivers/mtd/nand/raw/nand_base.c: patch does not apply
> > > >
> > > > Maybe you have a git tree with this somewhere?  
> > >
> > > Yep: https://github.com/bbrezillon/linux/tree/nand/next-fix  
> >
> > Works fine now, thanks!
> > Tested-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>  
> 
> Although the patch fixed the issue... but it seems it is not in
> linux-next. The next is broken since almost two weeks.
> 

Sorry, this is definitely in my TODO list, I need to put the NAND
branch in shape this week anyway.

Thanks,
Miquèl

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