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SubjectRe: [PATCH] irqchip/sifive-plic: Fix broken irq_set_affinity() callback
Date
On Tue, 20 Oct 2020 16:15:32 +0800, Greentime Hu wrote:
> It will always enable the interrupt after calling plic_set_affinity()
> however it should set to it previous setting. Staying disabled or enabled.
>
> This patch can also fix this pwm hang issue in Unleashed board.
>
> [ 919.015783] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
> [ 919.020922] rcu: 0-...0: (0 ticks this GP)
> idle=7d2/1/0x4000000000000002 softirq=1424/1424 fqs=105807
> [ 919.030295] (detected by 1, t=225825 jiffies, g=1561, q=3496)
> [ 919.036109] Task dump for CPU 0:
> [ 919.039321] kworker/0:1 R running task 0 30 2 0x00000008
> [ 919.046359] Workqueue: events set_brightness_delayed
> [ 919.051302] Call Trace:
> [ 919.053738] [<ffffffe000930d92>] __schedule+0x194/0x4de
> [ 982.035783] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
> [ 982.040923] rcu: 0-...0: (0 ticks this GP)
> idle=7d2/1/0x4000000000000002 softirq=1424/1424 fqs=113325
> [ 982.050294] (detected by 1, t=241580 jiffies, g=1561, q=3509)
> [ 982.056108] Task dump for CPU 0:
> [ 982.059321] kworker/0:1 R running task 0 30 2 0x00000008
> [ 982.066359] Workqueue: events set_brightness_delayed
> [ 982.071302] Call Trace:
> [ 982.073739] [<ffffffe000930d92>] __schedule+0x194/0x4de
> [..]

Applied to irq/irqchip-next, with some commit message adjustments.

[1/1] irqchip/sifive-plic: Fix broken irq_set_affinity() callback
commit: a7480c5d725c4ecfc627e70960f249c34f5d13e8

Cheers,

M.
--
Without deviation from the norm, progress is not possible.


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