x86/intel_rdt: Init padding only if a device exists

If no device exists it's pointless to calculate the padding data for the
schemata files.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: vikas.shivappa@intel.com

diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c
index 70a3307fd592b69d46c1006df641d292c9c65910..2802cad0371d4faf5d3f22a97e42c8f0b3537ea0 100644 (file)
--- a/arch/x86/kernel/cpu/intel_rdt.c
+++ b/arch/x86/kernel/cpu/intel_rdt.c
@@ -212,8 +212,6 @@ static inline bool get_rdt_resources(void)
                ret = true;
        }
 
-       rdt_init_padding();
-
        return ret;
 }
 
@@ -410,6 +408,8 @@ static int __init intel_rdt_late_init(void)
        if (!get_rdt_resources())
                return -ENODEV;
 
+       rdt_init_padding();
+
        state = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
                                  "x86/rdt/cat:online:",
                                  intel_rdt_online_cpu, intel_rdt_offline_cpu);