RE: [PATCH rtw-next] Revert "wifi: rtw88: add WQ_UNBOUND to alloc_workqueue users"

[Ping-Ke Shih <pkshih@realtek.com>]

Zenm Chen <zenmchen@gmail.com> wrote:
> Hi Ping-Ke,
> 
> Ping-Ke Shih <pkshih@realtek.com> 於 2025年12月8日週一 上午10:11寫道：
> >
> > Hi Zenm,
> >
> > Zenm Chen <zenmchen@gmail.com>
> > > Hi,
> > >
> > > Last weekend I tried applying the v1 [1] to the kernel 6.17.9, but that one didn't work, either.
> > >
> > > [1]
> > >
> https://patchwork.kernel.org/project/linux-wireless/patch/20251113160605.381777-3-marco.crivellari@sus
> > > e.com/
> > >
> > > [  306.035759] usb 3-2: new high-speed USB device number 5 using ehci-pci
> > > [  306.162258] usb 3-2: New USB device found, idVendor=0bda, idProduct=b82c, bcdDevice= 2.10
> > > [  306.162272] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> > > [  306.162278] usb 3-2: Product: 802.11ac NIC
> > > [  306.162282] usb 3-2: Manufacturer: Realtek
> > > [  306.162286] usb 3-2: SerialNumber: 123456
> > > [  306.239143] ------------[ cut here ]------------
> > > [  306.239148] WARNING: CPU: 3 PID: 2886 at kernel/workqueue.c:5667 alloc_workqueue_noprof+0x676/0x770
> >
> > I think this is because kernel 6.17.9 defines:
> >
> > __WQ_BH_ALLOWS          = WQ_BH | WQ_HIGHPRI,
> >
> > and the latest is:
> >
> > __WQ_BH_ALLOWS          = WQ_BH | WQ_HIGHPRI | WQ_PERCPU,
> >
> 
> Thank you for pointing out this. Have confirmed the patch v1 does work on
> Arch Linux with kernel 6.18.0-1-mainline.

Thanks for your confirmation. I'd re-open the patch as New in patchwork.

More, that means if you want to backport this driver on 6.17 or earlier, you
need some treatments for this change.