Hi, On an i.MX7-based board, I see the following "failed to write to address" error: ath10k_sdio mmc2:0001:1: qca9377 hw1.1 sdio target 0x05020001 chip_id 0x00000000 sub 0000:0000 ath10k_sdio mmc2:0001:1: kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0 ath10k_sdio mmc2:0001:1: firmware ver WLAN.TF.1.1.1-00061-QCATFSWPZ-1 api 5 features ignore-otp crc32 7746e551 EXT4-fs (mmcblk0p1): re-mounted. Opts: (null) ath10k_sdio mmc2:0001:1: failed to fetch board data for bus=sdio,vendor=0271,device=0701,subsystem-vendor=0000,subsystem-device=0000 from ath10k/QCA9377/hw1.0/board-2.bin ath10k_sdio mmc2:0001:1: board_file api 1 bmi_id N/A crc32 544289f7 ath10k_sdio mmc2:0001:1: htt-ver 3.32 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1 ath10k_sdio mmc2:0001:1: failed to write to address 0x12ff5: -84 ath10k_sdio mmc2:0001:1: failed to write skb to 0x12ff5 asynchronously: -84 The wifi is functional despite the errors. I tried applying Erik's patch: https://github.com/erstrom/linux-ath/commit/6507fd8df431e1d1f1ea344224956387dc1d35aa and the one from Niklas: https://github.com/erstrom/linux-ath/commit/4e794a12fa89e353e38528d1ada5d86f19672c3c but it did not help. Does anyone have any suggestions as to how to fix it? Thanks, Fabio Estevam