arc770: move arc patches to target/linux/generic

[openwrt.git] / target / linux / generic / patches-4.4 / 331-arc-remove-dependency-on-DEVTMPFS.patch

diff --git a/target/linux/generic/patches-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch b/target/linux/generic/patches-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch
new file mode 100644 (file)
index 0000000..29d9bff
--- /dev/null
+++ b/target/linux/generic/patches-4.4/331-arc-remove-dependency-on-DEVTMPFS.patch
@@ -0,0 +1,36 @@
+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(-)
+
+diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
+index 6312f60..a95bab3 100644
+--- 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
+-- 
+2.4.3
+