In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 6:

		[ -d /sys/class/ieee80211/$phy ] && return

                                          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

		[ -d /sys/class/ieee80211/"$phy" ] && return

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 9:

	local devpath

        ^-----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 12:

		for phy in $(ls /sys/class/ieee80211 2>/dev/null); do

                           ^-- SC2045 (error): Iterating over ls output is fragile. Use globs.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 13:

			case "$(readlink -f /sys/class/ieee80211/$phy/device)" in

                                                                 ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

			case "$(readlink -f /sys/class/ieee80211/"$phy"/device)" in

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 19:

	local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"

        ^-----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

              ^-----^ SC2155 (warning): Declare and assign separately to avoid masking return values.

                                                           ^---^ SC2019 (info): Use '[:upper:]' to support accents and foreign alphabets.

                                                                 ^---^ SC2018 (info): Use '[:lower:]' to support accents and foreign alphabets.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 24:

			[ "$macaddr" = "$(cat ${_phy}/macaddress)" ] || continue

                                              ^-----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

			[ "$macaddr" = "$(cat "${_phy}"/macaddress)" ] || continue

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 34:

	local device="$1"

        ^----------^ SC3043 (warning): In POSIX sh, 'local' is undefined.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 38:

	[ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {

                    ^-- SC2166 (warning): Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 46:

		config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"

                                                                         ^----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

		config_set "$device" macaddr "$(cat /sys/class/ieee80211/"${phy}"/macaddress)"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 67:

		devidx=$(($devidx + 1))

                          ^-----^ SC2004 (style): $/${} is unnecessary on arithmetic variables.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 94:

		if [ -x /usr/bin/readlink -a -h /sys/class/ieee80211/${dev} ]; then

                                          ^-- SC2166 (warning): Prefer [ p ] && [ q ] as [ p -a q ] is not well defined.

                                                                     ^----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

		if [ -x /usr/bin/readlink -a -h /sys/class/ieee80211/"${dev}" ]; then

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 95:

			path="$(readlink -f /sys/class/ieee80211/${dev}/device)"

                                                                 ^----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

			path="$(readlink -f /sys/class/ieee80211/"${dev}"/device)"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 106:

			dev_id="set wireless.radio${devidx}.macaddr=$(cat /sys/class/ieee80211/${dev}/macaddress)"

                                                                                               ^----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

			dev_id="set wireless.radio${devidx}.macaddr=$(cat /sys/class/ieee80211/"${dev}"/macaddress)"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/lib/wifi/mac80211.sh line 127:

		devidx=$(($devidx + 1))

                          ^-----^ SC2004 (style): $/${} is unnecessary on arithmetic variables.

For more information:

  https://www.shellcheck.net/wiki/SC2045 -- Iterating over ls output is fragi...

  https://www.shellcheck.net/wiki/SC2155 -- Declare and assign separately to ...

  https://www.shellcheck.net/wiki/SC2166 -- Prefer [ p ] && [ q ] as [ p -a q...