In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 3:

. /etc/init.d/functions.sh

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 11:

	local persistent_dir=/lib/persistent

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 12:

	local persistent_file_dir=$persistent_dir/var/lib/temp_ctrld

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 13:

	local persistent_file=temp_log

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 28:

		>> $persistent_file_dir/$persistent_file || {

                ^-- SC2188 (warning): This redirection doesn't have a command. Move to its command (or use 'true' as no-op).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 47:

[ ! -r $PRODUCT_SPECIFIC_SCRIPT ] || . $PRODUCT_SPECIFIC_SCRIPT ||

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 50:

[ ! -r $PRODUCTION_CONF ] || . $PRODUCTION_CONF ||

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/temperature-ctrl-setup line 53:

exec /usr/bin/temperature_ctrld -n $PRODUCTION_OPTIONS $TEMPERATURE_CTRLD_OPTIONS

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

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

Did you mean: 

exec /usr/bin/temperature_ctrld -n "$PRODUCTION_OPTIONS" "$TEMPERATURE_CTRLD_OPTIONS"

For more information:

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

  https://www.shellcheck.net/wiki/SC2188 -- This redirection doesn't have a c...

  https://www.shellcheck.net/wiki/SC3043 -- In POSIX sh, 'local' is undefined.