Lowercase the kernel version string to work as a Debian package name

0001-Case-hack-for-Debian-build.patch

From 33890150b1898474d16d141fba7865068d1e2f7b Mon Sep 17 00:00:00 2001
From: Alistair Young <avatar@arkane-systems.net>
Date: Thu, 6 May 2021 19:41:36 -0500
Subject: [PATCH] Case hack for Debian build.

---
 scripts/Makefile.package | 6 ++++--
 scripts/package/builddeb | 7 ++++---
 scripts/package/mkdebian | 8 +++++---
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/scripts/Makefile.package b/scripts/Makefile.package
index f952fb64789d..201e6635597e 100644
--- a/scripts/Makefile.package
+++ b/scripts/Makefile.package
@@ -24,8 +24,10 @@ include $(srctree)/scripts/Kbuild.include
 # but the binrpm-pkg target can; for some reason O= gets ignored.
 
 # Remove hyphens since they have special meaning in RPM filenames
-KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE))
-KDEB_SOURCENAME ?= linux-$(KERNELRELEASE)
+KERNELRELEASELC = $(shell echo $(KERNELRELEASE) | tr '[:upper:]' '[:lower:]')
+
+KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASELC))
+KDEB_SOURCENAME ?= linux-$(KERNELRELEASELC)
 KBUILD_PKG_ROOTCMD ?="fakeroot -u"
 export KDEB_SOURCENAME
 # Include only those top-level files that are needed by make, plus the GPL copy
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 91a502bb97e8..9d7fc917d19c 100755
--- a/scripts/package/builddeb
+++ b/scripts/package/builddeb
@@ -107,13 +107,14 @@ deploy_libc_headers () {
 }
 
 version=$KERNELRELEASE
+pkgversion=$(echo $KERNELRELEASE | tr '[:upper:]' '[:lower:]')
 tmpdir=debian/linux-image
 dbg_dir=debian/linux-image-dbg
-packagename=linux-image-$version
+packagename=linux-image-$pkgversion
 dbg_packagename=$packagename-dbg
 
 if [ "$ARCH" = "um" ] ; then
-	packagename=user-mode-linux-$version
+	packagename=user-mode-linux-$pkgversion
 fi
 
 # Not all arches have the same installed path in debian
@@ -211,7 +212,7 @@ done
 if [ "$ARCH" != "um" ]; then
 	if is_enabled CONFIG_MODULES; then
 		deploy_kernel_headers debian/linux-headers
-		create_package linux-headers-$version debian/linux-headers
+		create_package linux-headers-$pkgversion debian/linux-headers
 	fi
 
 	deploy_libc_headers debian/linux-libc-dev
diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 60a2a63a5e90..985a72e90a13 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -85,7 +85,9 @@ set_debarch() {
 }
 
 # Some variables and settings used throughout the script
-version=$KERNELRELEASE
+version=$(echo $KERNELRELEASE | tr '[:upper:]' '[:lower:]')
+mkversion=$KERNELRELEASE
+
 if [ -n "$KDEB_PKGVERSION" ]; then
 	packageversion=$KDEB_PKGVERSION
 	revision=${packageversion##*-}
@@ -225,14 +227,14 @@ srctree ?= .
 
 build-indep:
 build-arch:
-	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
+	\$(MAKE) KERNELRELEASE=${mkversion} ARCH=${ARCH} \
 	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
 
 build: build-arch
 
 binary-indep:
 binary-arch: build-arch
-	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
+	\$(MAKE) KERNELRELEASE=${mkversion} ARCH=${ARCH} \
 	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
 
 clean:
-- 
2.31.1