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-rw-r--r--target/linux/generic/pending-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch31
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch b/target/linux/generic/pending-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch
new file mode 100644
index 0000000000..48b3f9b428
--- /dev/null
+++ b/target/linux/generic/pending-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch
@@ -0,0 +1,31 @@
+From adfbf9e6cad93281cffceab078e7f6f2a8e094f9 Mon Sep 17 00:00:00 2001
+From: Alexey Brodkin <abrodkin@synopsys.com>
+Date: Thu, 13 Aug 2015 01:56:02 +0300
+Subject: [PATCH 1/2] openwrt: arc - remove dependency on DEVTMPFS
+
+OpenWRT builds initramfs so that it doesn't require DEVTMPFS so dropping
+this dependency. That helps to escape 2 separate kernel rebuilds with
+and without initramfs.
+
+2 builds happen because OpenWRT first builds kernel and later modules.
+When building entire kernel with simple "make" INITRAMFS sets to a real
+value and so was triggering DEVTMPFS selection. Then when building only
+modules with "make modules" command INITRAMFS is zeroed and so kernel
+config was changing that lead to full kernel rebuild.
+
+Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
+---
+ arch/arc/Kconfig | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/arch/arc/Kconfig
++++ b/arch/arc/Kconfig
+@@ -12,8 +12,6 @@ config ARC
+ select BUILDTIME_EXTABLE_SORT
+ select COMMON_CLK
+ select CLONE_BACKWARDS
+- # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
+- select DEVTMPFS if !INITRAMFS_SOURCE=""
+ select GENERIC_ATOMIC64
+ select GENERIC_CLOCKEVENTS
+ select GENERIC_FIND_FIRST_BIT