Re: renesas_sdhi problems in 5.10-stable was Re: [PATCH 5.10 000/226] 5.10.198-rc1 review

[Pavel Machek <pavel@denx.de>]

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Hi!

> > > And testing failed. So
> > > 
> > > commit f5799b4e142884c2e7aa99f813113af4a3395ffb
> > > Author: Wolfram Sang <wsa+renesas@sang-engineering.com>
> > > Date:   Tue Nov 10 15:20:57 2020 +0100
> > > 
> > >     mmc: renesas_sdhi: populate SCC pointer at the proper place
> > >     
> > >     [ Upstream commit d14ac691bb6f6ebaa7eeec21ca04dd47300ff5b6 ]
> > > 
> > > seems to be the buggy commit that breaks renesas boards in 5.10.
> > 
> > This patch was part of a series. Did the other two patches come with it?
> > 
> > b161d87dfd3d ("mmc: renesas_sdhi: probe into TMIO after SCC parameters have been setup")
> 
> Yes.
> 
> > 45bffc371fef ("mmc: renesas_sdhi: only reset SCC when its pointer is populated")
> 
> No :(
> 
> > If not, I could imagine that could lead to a crash. No idea why only
> > with 5.10, though.
> 
> The above commit is only in 5.11, so newer kernels should be fine.
> 
> I'll go queue up the one missing patch now, thanks.

Thank you. Patch indeed appears to be in 5.10.199.

But we still have failures on Renesas with 5.10.199-rc2:

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/pipelines/1047368849

And they still happed during MMC init:

    2.638013] renesas_sdhi_internal_dmac ee100000.mmc: Got CD GPIO
[    2.638846] INFO: trying to register non-static key.
[    2.644192] ledtrig-cpu: registered to indicate activity on CPUs
[    2.649066] The code is fine but needs lockdep annotation, or maybe
[    2.649069] you didn't initialize this object before use?
[    2.649071] turning off the locking correctness validator.
[    2.649080] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.199-rc2-arm64-renesas-ge31b6513c43d #1
[    2.649082] Hardware name: HopeRun HiHope RZ/G2M with sub board (DT)
[    2.649086] Call trace:
[    2.655106] SMCCC: SOC_ID: ARCH_SOC_ID not implemented, skipping ....
[    2.661354]  dump_backtrace+0x0/0x194
[    2.661361]  show_stack+0x14/0x20
[    2.667430] usbcore: registered new interface driver usbhid
[    2.672230]  dump_stack+0xe8/0x130
[    2.672238]  register_lock_class+0x480/0x514
[    2.672244]  __lock_acquire+0x74/0x20ec
[    2.681113] usbhid: USB HID core driver
[    2.687450]  lock_acquire+0x218/0x350
[    2.687456]  _raw_spin_lock+0x58/0x80
[    2.687464]  tmio_mmc_irq+0x410/0x9ac
[    2.688556] renesas_sdhi_internal_dmac ee160000.mmc: mmc0 base at 0x00000000ee160000, max clock rate 200 MHz
[    2.744936]  __handle_irq_event_percpu+0xbc/0x340
[    2.749635]  handle_irq_event+0x60/0x100
[    2.753553]  handle_fasteoi_irq+0xa0/0x1ec
[    2.757644]  __handle_domain_irq+0x7c/0xdc
[    2.761736]  efi_header_end+0x4c/0xd0
[    2.765393]  el1_irq+0xcc/0x180
[    2.768530]  arch_cpu_idle+0x14/0x2c
[    2.772100]  default_idle_call+0x58/0xe4
[    2.776019]  do_idle+0x244/0x2c0
[    2.779242]  cpu_startup_entry+0x20/0x6c
[    2.783160]  rest_init+0x164/0x28c
[    2.786561]  arch_call_rest_init+0xc/0x14
[    2.790565]  start_kernel+0x4c4/0x4f8
[    2.794233] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000014
[    2.803011] Mem abort info:

from https://lava.ciplatform.org/scheduler/job/1025535
from
https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/jobs/5360973735 .

Is there something else missing?

Best regards,
								Pavel
-- 
DENX Software Engineering GmbH,        Managing Director: Erika Unter
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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