In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 4:

. $IPKG_INSTROOT/lib/functions.sh

  ^-----------------------------^ SC1091 (info): Not following: ./lib/functions.sh was not specified as input (see shellcheck -x).

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

Did you mean: 

. "$IPKG_INSTROOT"/lib/functions.sh

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 5:

. $IPKG_INSTROOT/lib/functions/service.sh

  ^-- SC1091 (info): Not following: ./lib/functions/service.sh was not specified as input (see shellcheck -x).

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

Did you mean: 

. "$IPKG_INSTROOT"/lib/functions/service.sh

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 20:

	restart

        ^-----^ SC2119 (info): Use restart "$@" if function's $1 should mean script's $1.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 23:

restart() {

^-- SC2120 (warning): restart references arguments, but none are ever passed.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 40:

	rm -f "$IPKG_INSTROOT"/etc/rc.d/S??$name

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

Did you mean: 

	rm -f "$IPKG_INSTROOT"/etc/rc.d/S??"$name"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 41:

	rm -f "$IPKG_INSTROOT"/etc/rc.d/K??$name

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

Did you mean: 

	rm -f "$IPKG_INSTROOT"/etc/rc.d/K??"$name"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 103:

. "$initscript"

  ^-----------^ SC1090 (warning): ShellCheck can't follow non-constant source. Use a directive to specify location.

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 108:

	. $IPKG_INSTROOT/lib/functions/procd.sh

          ^-- SC1091 (info): Not following: ./lib/functions/procd.sh was not specified as input (see shellcheck -x).

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

Did you mean: 

	. "$IPKG_INSTROOT"/lib/functions/procd.sh

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 111:

		local method="set"

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

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 113:

		procd_open_service "$(basename ${basescript:-$initscript})" "$initscript"

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

Did you mean: 

		procd_open_service "$(basename "${basescript:-$initscript}")" "$initscript"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 126:

		TRACE_SYSCALLS=1

                ^------------^ SC2034 (warning): TRACE_SYSCALLS appears unused. Verify use (or export if used externally).

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 133:

		procd_kill "$(basename ${basescript:-$initscript})" "$1"

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

Did you mean: 

		procd_kill "$(basename "${basescript:-$initscript}")" "$1"

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/etc/rc.common line 150:

ALL_COMMANDS="start stop reload restart boot shutdown enable disable enabled depends ${EXTRA_COMMANDS}"

^----------^ SC2034 (warning): ALL_COMMANDS appears unused. Verify use (or export if used externally).

For more information:

  https://www.shellcheck.net/wiki/SC1090 -- ShellCheck can't follow non-const...

  https://www.shellcheck.net/wiki/SC2034 -- ALL_COMMANDS appears unused. Veri...

  https://www.shellcheck.net/wiki/SC2120 -- restart references arguments, but...