WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0xb8/0xf0() sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight'
There's another patch that fixes this issue:
Yeah, it fixes WARNING: for me and yet does not break anything.
Thank you!