Pro Controller connected with USB, doesn't reconnect after computer resumes from suspend

[SuperSamus]

Normally, if you connect a Nintendo Switch Pro Controller via USB, it is automatically connected when turning the computer on.
If however the computer is suspended, when resuming the computer, the controller won't reconnect, even if you press a button. The ways to reconnect it are either:

• Press the sync button on the controller;
• Unplug and plug the USB cable;
• Reboot the computer.

Relevant logs from journalctl when suspending:

lug 11 00:39:44 nixos kernel: nintendo 0003:057E:2009.000F: compensating for 37 dropped IMU reports
lug 11 00:39:44 nixos kernel: nintendo 0003:057E:2009.000F: delta=504 avg_delta=13

When resuming:

lug 11 00:39:44 nixos kernel: leds 0003:057E:2009.000F:green:player-1: Setting an LED's brightness failed (-110)
lug 11 00:39:45 nixos kernel: leds 0003:057E:2009.000F:green:player-2: Setting an LED's brightness failed (-110)
lug 11 00:39:45 nixos kernel: leds 0003:057E:2009.000F:green:player-3: Setting an LED's brightness failed (-110)
lug 11 00:39:46 nixos kernel: leds 0003:057E:2009.000F:green:player-4: Setting an LED's brightness failed (-110)
lug 11 00:39:46 nixos kernel: leds 0003:057E:2009.000F:blue:player-5: Setting an LED's brightness failed (-110)

After pressing the sync button on the controller (still plugged in via USB):

lug 11 00:49:21 nixos kernel: usb 3-2: USB disconnect, device number 17
lug 11 00:49:22 nixos kernel: usb 3-2: new full-speed USB device number 18 using xhci_hcd
lug 11 00:49:22 nixos kernel: usb 3-2: New USB device found, idVendor=057e, idProduct=2009, bcdDevice= 2.10
lug 11 00:49:22 nixos kernel: usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
lug 11 00:49:22 nixos kernel: usb 3-2: Product: Pro Controller

...etcetera.

[DanielOgorchock]

Thanks for pointing this out. Yeah the driver doesn't have pm hooks implemented. I should really add those.

[SuperSamus]

Well, I tried it myself.
After trying to compile the Linux kernel to load a module (first time), I finally did it.
I didn't test it much, but it seems to work well.
Here is the patch: pro-controller-suspend.txt
EDIT: pro-controller-suspend.txt

If no one has anything against it, I'll send it after a week. (My first kernel contribution)

[SuperSamus]

https://lore.kernel.org/linux-input/20230712121042.25318-2-tinozzo123@gmail.com/

[SuperSamus]

Fixed on Linux 6.6.