remove some xenial and old scripts

scripts/patch-realsense-ubuntu-lts-hwe.sh

@@ -95,31 +95,27 @@ k_tick=$(echo ${kernel_version[2]} | awk -F'-' '{print $2}')
 [ $k_maj_min -ge 600 ] && skip_plf_patch=1
 [ $k_maj_min -ge 605 ] && skip_md_patch=1
 
-# Construct branch name from distribution codename {xenial,bionic,..} and kernel version
+# Construct branch name from distribution codename {bionic,focal...} and kernel version
 # ubuntu_codename=`. /etc/os-release; echo ${UBUNTU_CODENAME/*, /}`
 ubuntu_codename=${ubuntu_codename:-$(lsb_release -c|cut -f2)}
 if [ -z "${ubuntu_codename}" ];
 then
-	# Trusty Tahr shall use xenial code base
-	ubuntu_codename="xenial"
+	# Trusty Tahr shall use bionic code base
+	ubuntu_codename="bionic"
 	retpoline_retrofit=1
 fi
 
 kernel_branch=$(choose_kernel_branch ${LINUX_BRANCH} ${ubuntu_codename})
 kernel_name="ubuntu-${ubuntu_codename}"
 echo -e "\e[32mCreate patches workspace in \e[93m${kernel_name} \e[32mfolder\n\e[0m"
 
-#Distribution-specific packages
-if { [ ${ubuntu_codename} != "xenial" ];  } ;
-then
-	require_package libelf-dev
-	require_package elfutils
-	#Ubuntu 18.04 kernel 4.18 + 20.04/ 5.4
-	require_package bison
-	require_package flex
-	# required if kernel >=5.11
-	require_package dwarves
-fi
+require_package libelf-dev
+require_package elfutils
+#Ubuntu 18.04 kernel 4.18 + 20.04/ 5.4
+require_package bison
+require_package flex
+# required if kernel >=5.11
+require_package dwarves
 
 # Get the linux kernel and change into source tree
 if [ ! -d ${kernel_name} ]; then

scripts/patch-realsense-ubuntu-lts.sh

@@ -75,12 +75,12 @@ if [[ ( ${xhci_patch} -eq 1 ) && ( ${k_maj_min} -ne 404 ) ]]; then
 	exit 1
 fi
 
-# Construct branch name from distribution codename {xenial,bionic,..} and kernel version
+# Construct branch name from distribution codename {bionic, focal...} and kernel version
 ubuntu_codename=`. /etc/os-release; echo ${UBUNTU_CODENAME/*, /}`
 if [ -z "${ubuntu_codename}" ];
 then
-	# Trusty Tahr shall use xenial code base
-	ubuntu_codename="xenial"
+	# Trusty Tahr shall use bionic code base
+	ubuntu_codename="bionic"
 	retpoline_retrofit=1
 fi
 

scripts/patch-realsense-ubuntu-odroid-xu4-4.14.sh

@@ -43,14 +43,6 @@ PLATFORM=$(uname -n)
 #fi
 kernel_branch="master"
 echo "Kernel branch: " $kernel_branch
-# Construct branch name from distribution codename {xenial,bionic,..} and kernel version
-#ubuntu_codename=`. /etc/os-release; echo ${UBUNTU_CODENAME/*, /}`
-#if [ -z "$UBUNTU_CODENAME" ];
-#then
-	# Trusty Tahr shall use xenial code base
-#	ubuntu_codename="xenial"
-#	retpoline_retrofit=1
-#fi
 ubuntu_codename="bionic"
 
 #kernel_name="ubuntu-${ubuntu_codename}-$kernel_branch"

scripts/patch-realsense-ubuntu-odroid.sh

@@ -39,12 +39,12 @@ else
 	kernel_branch=$(choose_kernel_branch $LINUX_BRANCH)	
 fi
 echo "Kernel branch: " $kernel_branch
-# Construct branch name from distribution codename {xenial,bionic,..} and kernel version
+# Construct branch name from distribution codename {bionic, focal...} and kernel version
 ubuntu_codename=`. /etc/os-release; echo ${UBUNTU_CODENAME/*, /}`
 if [ -z "$UBUNTU_CODENAME" ];
 then
-	# Trusty Tahr shall use xenial code base
-	ubuntu_codename="xenial"
+	# Trusty Tahr shall use bionic code base
+	ubuntu_codename="bionic"
 	retpoline_retrofit=1
 fi
 

scripts/patch-ubuntu-kernel-4.16.sh

@@ -36,12 +36,12 @@ retpoline_retrofit=0
 
 LINUX_BRANCH=$(uname -r)
 
-# Construct branch name from distribution codename {xenial,bionic,..} and kernel version
+# Construct branch name from distribution codename {bionic, focal...} and kernel version
 ubuntu_codename=`. /etc/os-release; echo ${UBUNTU_CODENAME/*, /}`
 if [ -z "${ubuntu_codename}" ];
 then
-	# Trusty Tahr shall use xenial code base
-	ubuntu_codename="xenial"
+	# Trusty Tahr shall use bionic code base
+	ubuntu_codename="bionic"
 	retpoline_retrofit=1
 fi
 

scripts/patch-utils-hwe.sh

@@ -20,16 +20,6 @@ function require_package {
 	fi
 }
 
-#Based on the current kernel version select the branch name to fetch the kernel source code
-# The reference name are pulled here : http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/
-# As of Jun 19
-#	Branch		Commit message								Author							Age
-#	hwe			UBUNTU: Ubuntu-hwe-4.15.0-24.26~16.04.1		Andy Whitcroft					6 days
-#	hwe-edge	UBUNTU: Ubuntu-hwe-4.15.0-23.25~16.04.1		Kleber Sacilotto de Souza		4 weeks
-#	hwe-zesty	UBUNTU: Ubuntu-hwe-4.10.0-43.47~16.04.1		Thadeu Lima de Souza Cascardo	6 months
-#	master		UBUNTU: Ubuntu-4.4.0-128.154				Stefan Bader					4 weeks
-#	master-next	UBUNTU: SAUCE: Redpine: fix soft-ap invisible issue	Sanjay Kumar Konduri	2 days
-
 # As of Jun  21, 2020
 #Ubuntu bionic repo : http://kernel.ubuntu.com/git/ubuntu/ubuntu-bionic.git/
 #   hwe	UBUNTU: Ubuntu-hwe-5.3.0-56.50~18.04.1	Kleber Sacilotto de Souza	3 weeks
@@ -47,31 +37,7 @@ function choose_kernel_branch {
 	# Split the kernel version string
 	IFS='.' read -a kernel_version <<< "$1"
 
-	if [ "$2" == "xenial" ];
-	then
-		case "${kernel_version[1]}" in
-		"4")									# Kernel 4.4. is managed on master branch
-			echo master
-			;;
-		"8")								 	# kernel 4.8 is deprecated and available via explicit tags. Currently on 4.8.0-58
-			echo Ubuntu-hwe-4.8.0-58.63_16.04.1
-			;;
-		"10")								 	# kernel 4.10 is managed on branch hwe-zesty as of 1.1.2018
-			echo hwe-zesty
-			;;
-		"13")								 	# kernel 4.13 is on hwe branch and replaced with 4.15. Provide source from a tagged version instead (back-compat)
-			echo Ubuntu-hwe-4.13.0-45.50_16.04.1
-			;;
-		"15")								 	# kernel 4.15 for Ubuntu xenial is either hwe or hwe-edge
-			echo hwe
-			;;
-		*)
-			#error message shall be redirected to stderr to be printed properly
-			echo -e "\e[31mUnsupported kernel version $1 . The patches are maintained for Ubuntu16 (Xenial) with LTS kernel versions 4.4, 4.8, 4.10, 4.13 and 4.15\e[0m" >&2
-			exit 1
-			;;
-		esac
-	elif [ "$2" == "bionic" ];
+	if [ "$2" == "bionic" ];
 	then
 		case "${kernel_version[0]}.${kernel_version[1]}" in
 		"4.15")								 	# kernel 4.15 for Ubuntu 18/Bionic Beaver

scripts/patch-utils.sh

@@ -20,15 +20,6 @@ function require_package {
 	fi
 }
 
-#Based on the current kernel version select the branch name to fetch the kernel source code
-# The reference name are pulled here : http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/
-# As of Jun 19
-#	Branch		Commit message								Author							Age
-#	hwe			UBUNTU: Ubuntu-hwe-4.15.0-24.26~16.04.1		Andy Whitcroft					6 days
-#	hwe-edge	UBUNTU: Ubuntu-hwe-4.15.0-23.25~16.04.1		Kleber Sacilotto de Souza		4 weeks
-#	hwe-zesty	UBUNTU: Ubuntu-hwe-4.10.0-43.47~16.04.1		Thadeu Lima de Souza Cascardo	6 months
-#	master		UBUNTU: Ubuntu-4.4.0-128.154				Stefan Bader					4 weeks
-#	master-next	UBUNTU: SAUCE: Redpine: fix soft-ap invisible issue	Sanjay Kumar Konduri	2 days
 
 # As of Jun  21, 2020
 #Ubuntu bionic repo : http://kernel.ubuntu.com/git/ubuntu/ubuntu-bionic.git/
@@ -47,31 +38,7 @@ function choose_kernel_branch {
 	# Split the kernel version string
 	IFS='.' read -a kernel_version <<< "$1"
 
-	if [ "$2" == "xenial" ];
-	then
-		case "${kernel_version[1]}" in
-		"4")									# Kernel 4.4. is managed on master branch
-			echo master
-			;;
-		"8")								 	# kernel 4.8 is deprecated and available via explicit tags. Currently on 4.8.0-58
-			echo Ubuntu-hwe-4.8.0-58.63_16.04.1
-			;;
-		"10")								 	# kernel 4.10 is managed on branch hwe-zesty as of 1.1.2018
-			echo hwe-zesty
-			;;
-		"13")								 	# kernel 4.13 is on hwe branch and replaced with 4.15. Provide source from a tagged version instead (back-compat)
-			echo Ubuntu-hwe-4.13.0-45.50_16.04.1
-			;;
-		"15")								 	# kernel 4.15 for Ubuntu xenial is either hwe or hwe-edge
-			echo hwe
-			;;
-		*)
-			#error message shall be redirected to stderr to be printed properly
-			echo -e "\e[31mUnsupported kernel version $1 . The patches are maintained for Ubuntu16 (Xenial) with LTS kernel versions 4.4, 4.8, 4.10, 4.13 and 4.15\e[0m" >&2
-			exit 1
-			;;
-		esac
-	elif [ "$2" == "bionic" ];
+	if [ "$2" == "bionic" ];
 	then
 		case "${kernel_version[0]}.${kernel_version[1]}" in
 		"4.15")								 	# kernel 4.15 for Ubuntu 18/Bionic Beaver