Hello, please add this patch: Subject: ath9k: Avoid OF no-EEPROM quirks without qca,no-eeprom Author: Daniel F. Dickinson <cshored@xxxxxxxxxxxxx> commit ce938231bd3b1d7af3cbd8836f084801090470e1 [0] to the stable release of 4.14 and 4.19. The patch fixes a problem with bog-standard (as in consumer-grade) ath9k pci cards that are defined in DeviceTrees. In the current context, the driver handles those cards as special-basket cases that need off-card calibration data in order to work. Regards, Christian [0] <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ce938231bd3b1d7af3cbd8836f084801090470e1>