From de79f4ab882b2955432eb8104fd5426745262e83 Mon Sep 17 00:00:00 2001
From: Paul Wassi
Date: Tue, 13 Mar 2018 09:43:43 +0100
Subject: brcm47xx: add kernel 4.14 support
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Add patches for 4.14, drop patch 030 since it's already included
upstream.
Tested on:
1) WRT54GL (with RAM upgraded to 32 MiB)
2) WL500gPv2 (with RAM upgraded to 64 MiB)
3) BCM47186B0 SoC board
4) BCM4706 SoC board
Signed-off-by: Paul Wassi
Signed-off-by: Rafał Miłecki
---
.../brcm47xx/patches-4.14/300-fork_cacheflush.patch | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 target/linux/brcm47xx/patches-4.14/300-fork_cacheflush.patch
(limited to 'target/linux/brcm47xx/patches-4.14/300-fork_cacheflush.patch')
diff --git a/target/linux/brcm47xx/patches-4.14/300-fork_cacheflush.patch b/target/linux/brcm47xx/patches-4.14/300-fork_cacheflush.patch
new file mode 100644
index 0000000000..b5efaaf03c
--- /dev/null
+++ b/target/linux/brcm47xx/patches-4.14/300-fork_cacheflush.patch
@@ -0,0 +1,21 @@
+From: Wolfram Joost
+Subject: [PATCH] fork_cacheflush
+
+On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
+seem to be caused by a kernel. They can be avoided by:
+1) Disabling highpage
+2) Using flush_cache_mm in flush_cache_dup_mm
+
+For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
+---
+--- a/arch/mips/include/asm/cacheflush.h
++++ b/arch/mips/include/asm/cacheflush.h
+@@ -47,7 +47,7 @@
+ extern void (*flush_cache_all)(void);
+ extern void (*__flush_cache_all)(void);
+ extern void (*flush_cache_mm)(struct mm_struct *mm);
+-#define flush_cache_dup_mm(mm) do { (void) (mm); } while (0)
++#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+ extern void (*flush_cache_range)(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end);
+ extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
--
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