On Tue, 25 Aug 2020 11:39:48 +0200,
Tiezhu Yang wrote:
>
> This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson
> 7A1000 controller") to fix the following error on the Loongson LS7A
> platform:
>
> rcu: INFO: rcu_preempt self-detected stall on CPU
> <SNIP>
> NMI backtrace for cpu 0
> CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3
> Hardware name: , BIOS
> Workqueue: events azx_probe_work [snd_hda_intel]
> <SNIP>
> Call Trace:
> [<ffffffff80211a64>] show_stack+0x9c/0x130
> [<ffffffff8065a740>] dump_stack+0xb0/0xf0
> [<ffffffff80665774>] nmi_cpu_backtrace+0x134/0x140
> [<ffffffff80665910>] nmi_trigger_cpumask_backtrace+0x190/0x200
> [<ffffffff802b1abc>] rcu_dump_cpu_stacks+0x12c/0x190
> [<ffffffff802b08cc>] rcu_sched_clock_irq+0xa2c/0xfc8
> [<ffffffff802b91d4>] update_process_times+0x2c/0xb8
> [<ffffffff802cad80>] tick_sched_timer+0x40/0xb8
> [<ffffffff802ba5f0>] __hrtimer_run_queues+0x118/0x1d0
> [<ffffffff802bab74>] hrtimer_interrupt+0x12c/0x2d8
> [<ffffffff8021547c>] c0_compare_interrupt+0x74/0xa0
> [<ffffffff80296bd0>] __handle_irq_event_percpu+0xa8/0x198
> [<ffffffff80296cf0>] handle_irq_event_percpu+0x30/0x90
> [<ffffffff8029d958>] handle_percpu_irq+0x88/0xb8
> [<ffffffff80296124>] generic_handle_irq+0x44/0x60
> [<ffffffff80b3cfd0>] do_IRQ+0x18/0x28
> [<ffffffff8067ace4>] plat_irq_dispatch+0x64/0x100
> [<ffffffff80209a20>] handle_int+0x140/0x14c
> [<ffffffff802402e8>] irq_exit+0xf8/0x100
>
> Because AZX_DRIVER_GENERIC can not work well for Loongson LS7A HDA
> controller, it needs some workarounds which are not merged into the
> upstream kernel at this time, so it should revert this patch now.
>
> Fixes: 61eee4a7fc40 ("ALSA: hda: Add support for Loongson 7A1000 controller")
> Cc: <[email protected]> # 5.9-rc1+
> Signed-off-by: Tiezhu Yang <[email protected]>
> ---
>
> v2: update commit message
Applied now. Thanks.
Takashi
Hi, all
This patch should be backported to 5.4.
Huacai
On Tue, Aug 25, 2020 at 6:03 PM Takashi Iwai <[email protected]> wrote:
>
> On Tue, 25 Aug 2020 11:39:48 +0200,
> Tiezhu Yang wrote:
> >
> > This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson
> > 7A1000 controller") to fix the following error on the Loongson LS7A
> > platform:
> >
> > rcu: INFO: rcu_preempt self-detected stall on CPU
> > <SNIP>
> > NMI backtrace for cpu 0
> > CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3
> > Hardware name: , BIOS
> > Workqueue: events azx_probe_work [snd_hda_intel]
> > <SNIP>
> > Call Trace:
> > [<ffffffff80211a64>] show_stack+0x9c/0x130
> > [<ffffffff8065a740>] dump_stack+0xb0/0xf0
> > [<ffffffff80665774>] nmi_cpu_backtrace+0x134/0x140
> > [<ffffffff80665910>] nmi_trigger_cpumask_backtrace+0x190/0x200
> > [<ffffffff802b1abc>] rcu_dump_cpu_stacks+0x12c/0x190
> > [<ffffffff802b08cc>] rcu_sched_clock_irq+0xa2c/0xfc8
> > [<ffffffff802b91d4>] update_process_times+0x2c/0xb8
> > [<ffffffff802cad80>] tick_sched_timer+0x40/0xb8
> > [<ffffffff802ba5f0>] __hrtimer_run_queues+0x118/0x1d0
> > [<ffffffff802bab74>] hrtimer_interrupt+0x12c/0x2d8
> > [<ffffffff8021547c>] c0_compare_interrupt+0x74/0xa0
> > [<ffffffff80296bd0>] __handle_irq_event_percpu+0xa8/0x198
> > [<ffffffff80296cf0>] handle_irq_event_percpu+0x30/0x90
> > [<ffffffff8029d958>] handle_percpu_irq+0x88/0xb8
> > [<ffffffff80296124>] generic_handle_irq+0x44/0x60
> > [<ffffffff80b3cfd0>] do_IRQ+0x18/0x28
> > [<ffffffff8067ace4>] plat_irq_dispatch+0x64/0x100
> > [<ffffffff80209a20>] handle_int+0x140/0x14c
> > [<ffffffff802402e8>] irq_exit+0xf8/0x100
> >
> > Because AZX_DRIVER_GENERIC can not work well for Loongson LS7A HDA
> > controller, it needs some workarounds which are not merged into the
> > upstream kernel at this time, so it should revert this patch now.
> >
> > Fixes: 61eee4a7fc40 ("ALSA: hda: Add support for Loongson 7A1000 controller")
> > Cc: <[email protected]> # 5.9-rc1+
> > Signed-off-by: Tiezhu Yang <[email protected]>
> > ---
> >
> > v2: update commit message
>
> Applied now. Thanks.
>
>
> Takashi
On 09/08/2020 08:37 AM, Huacai Chen wrote:
> Hi, all
>
> This patch should be backported to 5.4.
Hi,
Commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson
7A1000 controller") has been not yet merged into 5.4, so no
need to backport.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/pci/hda/hda_intel.c?h=v5.4
Thanks,
Tiezhu
>
> Huacai
>
> On Tue, Aug 25, 2020 at 6:03 PM Takashi Iwai <[email protected]> wrote:
>> On Tue, 25 Aug 2020 11:39:48 +0200,
>> Tiezhu Yang wrote:
>>> This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson
>>> 7A1000 controller") to fix the following error on the Loongson LS7A
>>> platform:
>>>
>>> rcu: INFO: rcu_preempt self-detected stall on CPU
>>> <SNIP>
>>> NMI backtrace for cpu 0
>>> CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3
>>> Hardware name: , BIOS
>>> Workqueue: events azx_probe_work [snd_hda_intel]
>>> <SNIP>
>>> Call Trace:
>>> [<ffffffff80211a64>] show_stack+0x9c/0x130
>>> [<ffffffff8065a740>] dump_stack+0xb0/0xf0
>>> [<ffffffff80665774>] nmi_cpu_backtrace+0x134/0x140
>>> [<ffffffff80665910>] nmi_trigger_cpumask_backtrace+0x190/0x200
>>> [<ffffffff802b1abc>] rcu_dump_cpu_stacks+0x12c/0x190
>>> [<ffffffff802b08cc>] rcu_sched_clock_irq+0xa2c/0xfc8
>>> [<ffffffff802b91d4>] update_process_times+0x2c/0xb8
>>> [<ffffffff802cad80>] tick_sched_timer+0x40/0xb8
>>> [<ffffffff802ba5f0>] __hrtimer_run_queues+0x118/0x1d0
>>> [<ffffffff802bab74>] hrtimer_interrupt+0x12c/0x2d8
>>> [<ffffffff8021547c>] c0_compare_interrupt+0x74/0xa0
>>> [<ffffffff80296bd0>] __handle_irq_event_percpu+0xa8/0x198
>>> [<ffffffff80296cf0>] handle_irq_event_percpu+0x30/0x90
>>> [<ffffffff8029d958>] handle_percpu_irq+0x88/0xb8
>>> [<ffffffff80296124>] generic_handle_irq+0x44/0x60
>>> [<ffffffff80b3cfd0>] do_IRQ+0x18/0x28
>>> [<ffffffff8067ace4>] plat_irq_dispatch+0x64/0x100
>>> [<ffffffff80209a20>] handle_int+0x140/0x14c
>>> [<ffffffff802402e8>] irq_exit+0xf8/0x100
>>>
>>> Because AZX_DRIVER_GENERIC can not work well for Loongson LS7A HDA
>>> controller, it needs some workarounds which are not merged into the
>>> upstream kernel at this time, so it should revert this patch now.
>>>
>>> Fixes: 61eee4a7fc40 ("ALSA: hda: Add support for Loongson 7A1000 controller")
>>> Cc: <[email protected]> # 5.9-rc1+
>>> Signed-off-by: Tiezhu Yang <[email protected]>
>>> ---
>>>
>>> v2: update commit message
>> Applied now. Thanks.
>>
>>
>> Takashi
On Tue, Sep 08, 2020 at 11:09:31AM +0800, Tiezhu Yang wrote:
> On 09/08/2020 08:37 AM, Huacai Chen wrote:
> > Hi, all
> >
> > This patch should be backported to 5.4.
>
> Hi,
>
> Commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson
> 7A1000 controller") has been not yet merged into 5.4, so no
> need to backport.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/pci/hda/hda_intel.c?h=v5.4
It showed up in 5.4.62, so yes, it does need to go there.
thanks,
greg k-h