In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 7:

streamcache=$(($streamcachebytes / 1024))

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 11:

while read what val kb; do

      ^--^ SC2162 (info): read without -r will mangle backslashes.

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

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 12:

	[ $what != MemTotal: ] || total=$val

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

Did you mean: 

	[ "$what" != MemTotal: ] || total=$val

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 13:

	[ $what != CmaTotal: ] || cma=$val

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

Did you mean: 

	[ "$what" != CmaTotal: ] || cma=$val

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 14:

	[ $total -eq 0 ] || [ $cma -eq 0 ] || break

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

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

Did you mean: 

	[ "$total" -eq 0 ] || [ "$cma" -eq 0 ] || break

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/zram-init line 17:

disksize=$((($total - $streamcache - $cma) * $RATIO/100))

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

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

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

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

For more information:

  https://www.shellcheck.net/wiki/SC2034 -- kb appears unused. Verify use (or...

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...

  https://www.shellcheck.net/wiki/SC2162 -- read without -r will mangle backs...