Re: [PATCH v2 7/7] thunderbolt: prevent pcie tunnel activation/teardown warnings

[sashiko-bot@kernel.org]

> When usb4 enter sleep mode, echo 1 to authorized of sysfile,
> will wakeup usb4 driver, but fail to create pcie tunnel, cause
> the warning due to a race condition between router disconnect
> during resume and user authorization
> 
> [  278.831186] usb4_hi NVDA8100:00: 0:1: is unplugged (state: 7), retrying...
> [  278.943031] usb4_hi NVDA8100:00: 0:1: failed to reach state TB_PORT_UP. Ignoring port...
> [  278.951125] usb4_hi NVDA8100:00: 0:1: lost during suspend, disconnecting
> ...
> [  279.013763] usb4_hi NVDA8100:00: 0:7 <-> 1:9 (PCI): activating
> [  279.019587] usb4_hi NVDA8100:00: activating PCIe Down path from 0:7 to 1:9
> [  279.026468] usb4_hi NVDA8100:00: 1:1: Writing hop 1
> [  279.031335] usb4_hi NVDA8100:00: 1:1:  In HopID: 8 => Out port: 9 Out HopID: 8
> [  279.038546] usb4_hi NVDA8100:00: 1:1:   Weight: 1 Priority: 3 Credits: 32 Drop: 0 PM: 0
> [  279.046536] usb4_hi NVDA8100:00: 1:1:    Counter enabled: 0 Counter index: 2047
> [ ... ]
> [  546.303767] ---[ end trace 0000000000000000 ]---
> 
> The check prevents a redundant lookup and eliminates the warning
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261110114925.722014-2-chunfeng.yun@mediatek.com?part=7