From c04534d38d15d7f9c12f7d63756a98fc2dfd55d7 Mon Sep 17 00:00:00 2001
From: Fabio Erculiani <lxnay@sabayon.org>
Date: Thu, 24 May 2012 15:51:09 +0200
Subject: [PATCH] [eclass] sabayon-kernel: force gzip compression on initramfs

This workaround a bug inside splash_geninitramfs which corrupts the
whole initramfs if xz is selected by genkernel
---
 eclass/sabayon-kernel.eclass | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/eclass/sabayon-kernel.eclass b/eclass/sabayon-kernel.eclass
index a7c6aa82b..7fb50a16f 100644
--- a/eclass/sabayon-kernel.eclass
+++ b/eclass/sabayon-kernel.eclass
@@ -451,6 +451,13 @@ _kernel_src_compile() {
 		K_GENKERNEL_ARGS+=" --kernel-target=uImage --kernel-binary=arch/arm/boot/uImage"
 	fi
 
+	# Workaround bug in splash_geninitramfs corrupting the initramfs
+	# if xz compression is used (newer genkernel >3.4.24)
+	local support_comp=$(genkernel --help | grep compress-initramfs-type)
+	if [ -n "${support_comp}" ]; then
+		GKARGS+=" --compress-initramfs-type=gzip"
+	fi
+
 	unset LDFLAGS
 	DEFAULT_KERNEL_SOURCE="${S}" CMD_KERNEL_DIR="${S}" genkernel ${GKARGS} ${K_GENKERNEL_ARGS} \
 		--kerneldir="${S}" \