From ec4dcbf19646e52389c72d85daf20b4e74dc0f92 Mon Sep 17 00:00:00 2001

From: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>

Date: Tue, 22 Aug 2017 20:53:41 +0530

Subject: [PATCH 1/5] devtree: Check status property for caches

Check status property for L1 cache before enabling cache node.

Also check status before enabling L2/L3 icache.

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>

---

 src/core/device-tree.cc | 9 +++++++++

 1 file changed, 9 insertions(+)

diff --git a/src/core/device-tree.cc b/src/core/device-tree.cc

index 05b5b3c..e14a3b3 100644

--- a/src/core/device-tree.cc

+++ b/src/core/device-tree.cc

@@ -670,7 +670,10 @@ static void scan_devtree_cpu_power(hwNode & core)

     product = hw::strip(get_string(basepath + "/name"));

     if (hw::strip(get_string(basepath + "/status")) != "okay")

+    {

       cache.disable();

+      icache.disable();

+    }

     if (product == "l2-cache")

       fill_cache_info("L2 Cache", basepath, cache, icache);

@@ -773,6 +776,12 @@ static void scan_devtree_cpu_power(hwNode & core)

       if (cache.getSize() > 0)

         cpu.addChild(cache);

+

+      if (hw::strip(get_string(basepath + "/status")) != "okay")

+      {

+        cache.disable();

+        icache.disable();

+      }

     }

     if (exists(basepath + "/l2-cache"))

-- 

1.8.3.1