From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 14 Apr 2017 12:06:26 +0000 (+0200)
Subject: x86/intel_rdt: Init padding only if a device exists
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=06b57e4550d400c2e7dcafbde6fdb1fcb6fcdcee;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 70a3307fd592..2802cad0371d 100644
--- 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);