Re: [PATCH] arm64: dts: qcom: sdm660-xiaomi-lavender: Configure WLED

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25.04.2022 06:28, Dang Huynh wrote:
WLED is used for controlling display backlight on this phone.


Hi!

Interacting with wled changes brightness indeed, but results in the following trace in dmesg:

```
[  499.906317] ------------[ cut here ]------------
[  499.906478] Unbalanced enable for IRQ 39
[ 499.910118] WARNING: CPU: 4 PID: 74 at kernel/irq/manage.c:774 __enable_irq+0x4c/0x80
[  499.914094] Modules linked in:
[ 499.921705] CPU: 4 PID: 74 Comm: kworker/4:2 Not tainted 5.17.0-sdm660-07615-gd33d148796b0-dirty #23
[  499.924800] Hardware name: Xiaomi Redmi Note 7 (DT)
[  499.933988] Workqueue: events wled_ovp_work
[ 499.938571] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[  499.942803] pc : __enable_irq+0x4c/0x80
[  499.949687] lr : __enable_irq+0x4c/0x80
[  499.953506] sp : ffff800008a73d70
[ 499.957311] x29: ffff800008a73d70 x28: 0000000000000000 x27: 0000000000000000 [ 499.960890] x26: ffffad5f9fa4efc0 x25: ffff60283e4baf05 x24: ffff602781f65130 [ 499.968010] x23: ffff60283e4baf00 x22: ffff60283e4b7180 x21: 0000000000000000 [ 499.975128] x20: 0000000000000027 x19: ffff602781136600 x18: ffffffffffffffff [ 499.982243] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001 [ 499.989363] x14: 0000000000000000 x13: ffffad5f9f92fea8 x12: 0000000000000357 [ 499.996479] x11: 000000000000011d x10: ffffad5f9f987ea8 x9 : ffffad5f9f92fea8 [ 500.003597] x8 : 00000000ffffefff x7 : ffffad5f9f987ea8 x6 : 0000000000000000 [ 500.010714] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000 [ 500.017832] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff6027820c8000
[  500.024954] Call trace:
[  500.047230]  __enable_irq+0x4c/0x80
[  500.062686]  enable_irq+0x48/0xa0
[  500.078190]  wled_ovp_work+0x14/0x20
[  500.093761]  process_one_work+0x1d0/0x320
[  500.105080]  worker_thread+0x14c/0x444
[  500.120700]  kthread+0x10c/0x110
[  500.136347]  ret_from_fork+0x10/0x20
[  500.151981] ---[ end trace 0000000000000000 ]---
```

--
Regards,
Alexey Minnekhanov
postmarketOS developer
https://www.postmarketos.org



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