This is a note to let you know that I have just added a patch titled
MIPS: BMIPS: local_r4k___flush_cache_all needs to blast S-cache
to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree
which can be found at:
https://git.launchpad.net/~canonical-kernel/linux/+git/linux-stable-ckt/log/?h=linux-4.2.y-queue
This patch is scheduled to be released in version 4.2.8-ckt12.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
---8<------------------------------------------------------------
>From 7d0838c220c81f46f108aeb6c4695c5cd0a1b885 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@xxxxxxxxx>
Date: Mon, 4 Apr 2016 10:55:36 -0700
Subject: MIPS: BMIPS: local_r4k___flush_cache_all needs to blast S-cache
commit f675843ddfdfdf467d08cc922201614a149e439e upstream.
local_r4k___flush_cache_all() is missing a special check for BMIPS5000
processors, we need to blast the S-cache, just like other MTI processors
since we have an inclusive cache. We also need an additional __sync() to
make sure this is completed.
Fixes: d74b0172e4e2c ("MIPS: BMIPS: Add special cache handling in c-r4k.c")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/13012/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
arch/mips/mm/c-r4k.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index f22809f..a50011a 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -447,6 +447,11 @@ static inline void local_r4k___flush_cache_all(void * args)
r4k_blast_scache();
break;
+ case CPU_BMIPS5000:
+ r4k_blast_scache();
+ __sync();
+ break;
+
default:
r4k_blast_dcache();
r4k_blast_icache();
--
2.7.4
