From fac51482577d5e05bbb0efa8d602a3c2111098bf Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Fri, 28 Oct 2016 09:45:28 +0100 Subject: drivers: base: cacheinfo: fix x86 with CONFIG_OF enabled With CONFIG_OF enabled on x86, we get the following error on boot: " Failed to find cpu0 device node Unable to detect cache hierarchy from DT for CPU 0 " and the cacheinfo fails to get populated in the corresponding sysfs entries. This is because cache_setup_of_node looks for of_node for setting up the shared cpu_map without checking that it's already populated in the architecture specific callback. In order to indicate that the shared cpu_map is already populated, this patch introduces a boolean `cpu_map_populated` in struct cpu_cacheinfo that can be used by the generic code to skip cache_shared_cpu_map_setup. This patch also sets that boolean for x86. Cc: Greg Kroah-Hartman Signed-off-by: Sudeep Holla Signed-off-by: Greg Kroah-Hartman --- drivers/base/cacheinfo.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/base') diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c index e9fd32e91668..ecde8957835a 100644 --- a/drivers/base/cacheinfo.c +++ b/drivers/base/cacheinfo.c @@ -106,6 +106,9 @@ static int cache_shared_cpu_map_setup(unsigned int cpu) unsigned int index; int ret; + if (this_cpu_ci->cpu_map_populated) + return 0; + ret = cache_setup_of_node(cpu); if (ret) return ret; -- cgit v1.2.3