# Use the default kernel version if the Makefile doesn't override it
-ifeq ($(LINUX_VERSION),)
- ifeq ($(KERNEL),2.4)
- LINUX_VERSION:=2.4.34
- LINUX_RELEASE:=1
- LINUX_KERNEL_MD5SUM:=f59665540a7f3351ea416a0dad104b55
- else
- LINUX_VERSION:=2.6.21.5
- LINUX_RELEASE:=1
- LINUX_KERNEL_MD5SUM:=2e9a302b5d514b231640227d6a2ab7bf
- endif
-endif
-KERNEL:=2.$(word 2,$(subst ., ,$(strip $(LINUX_VERSION))))
+LINUX_RELEASE?=1
+
+ifeq ($(LINUX_VERSION),3.3.8)
+ LINUX_KERNEL_MD5SUM:=f1058f64eed085deb44f10cee8541d50
+endif
+ifeq ($(LINUX_VERSION),3.6.11)
+ LINUX_KERNEL_MD5SUM:=3d602ad7f7984509c3e923a5ae90bc54
+endif
+ifeq ($(LINUX_VERSION),3.8.13)
+ LINUX_KERNEL_MD5SUM:=2af19d06cd47ec459519159cdd10542d
+endif
+ifeq ($(LINUX_VERSION),3.9.11)
+ LINUX_KERNEL_MD5SUM:=edbf88eb7f7d34dbd5d3887726790755
+endif
+ifeq ($(LINUX_VERSION),3.10.44)
+ LINUX_KERNEL_MD5SUM:=8a4006eff3bbd8aff58fe4b443223e7a
+endif
+ifeq ($(LINUX_VERSION),3.13.7)
+ LINUX_KERNEL_MD5SUM:=370adced5e5c1cb1d0d621c2dae2723f
+endif
+ifeq ($(LINUX_VERSION),3.14.12)
+ LINUX_KERNEL_MD5SUM:=7e76da2910683fe4dfbcec6ebfdd9a32
+endif
+
+# disable the md5sum check for unknown kernel versions
+LINUX_KERNEL_MD5SUM?=x
+
+split_version=$(subst ., ,$(1))
+merge_version=$(subst $(space),.,$(1))
+KERNEL_BASE=$(firstword $(subst -, ,$(LINUX_VERSION)))
+KERNEL=$(call merge_version,$(wordlist 1,2,$(call split_version,$(KERNEL_BASE))))
+ifeq ($(firstword $(call split_version,$(KERNEL_BASE))),2)
+ KERNEL_PATCHVER=$(call merge_version,$(wordlist 1,3,$(call split_version,$(KERNEL_BASE))))
+else
+ KERNEL_PATCHVER=$(KERNEL)
+endif