In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/sbin/hotplug-call line 6:

. /lib/functions.sh

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

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/sbin/hotplug-call line 14:

[ \! -z "$1" -a -d /etc/hotplug.d/$1 ] && {

     ^-- SC2057 (warning): Unknown binary operator.

             ^-- 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: 

[ \! -z "$1" -a -d /etc/hotplug.d/"$1" ] && {

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/sbin/hotplug-call line 15:

	for script in $(ls /etc/hotplug.d/$1/* 2>&-); do (

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

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

Did you mean: 

	for script in $(ls /etc/hotplug.d/"$1"/* 2>&-); do (

In /logs/firmware/unblob_extracted/firmware_extract/1568982-13971496.squashfs_v4_le_extract/sbin/hotplug-call line 16:

		[ -f $script ] && . $script

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

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

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

Did you mean: 

		[ -f "$script" ] && . "$script"

For more information:

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

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

  https://www.shellcheck.net/wiki/SC2057 -- Unknown binary operator.