--- zzzz-none-000/linux-3.10.107/drivers/char/hw_random/via-rng.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/char/hw_random/via-rng.c	2021-02-04 17:41:59.000000000 +0000
@@ -29,10 +29,11 @@
 #include <linux/kernel.h>
 #include <linux/hw_random.h>
 #include <linux/delay.h>
+#include <asm/cpu_device_id.h>
 #include <asm/io.h>
 #include <asm/msr.h>
 #include <asm/cpufeature.h>
-#include <asm/i387.h>
+#include <asm/fpu/api.h>
 
 
 
@@ -140,7 +141,7 @@
 	 * register */
 	if ((c->x86 == 6) && (c->x86_model >= 0x0f)) {
 		if (!cpu_has_xstore_enabled) {
-			printk(KERN_ERR PFX "can't enable hardware RNG "
+			pr_err(PFX "can't enable hardware RNG "
 				"if XSTORE is not enabled\n");
 			return -ENODEV;
 		}
@@ -179,7 +180,7 @@
 	   unneeded */
 	rdmsr(MSR_VIA_RNG, lo, hi);
 	if ((lo & VIA_RNG_ENABLE) == 0) {
-		printk(KERN_ERR PFX "cannot enable VIA C3 RNG, aborting\n");
+		pr_err(PFX "cannot enable VIA C3 RNG, aborting\n");
 		return -ENODEV;
 	}
 
@@ -201,10 +202,10 @@
 
 	if (!cpu_has_xstore)
 		return -ENODEV;
-	printk(KERN_INFO "VIA RNG detected\n");
+	pr_info("VIA RNG detected\n");
 	err = hwrng_register(&via_rng);
 	if (err) {
-		printk(KERN_ERR PFX "RNG registering failed (%d)\n",
+		pr_err(PFX "RNG registering failed (%d)\n",
 		       err);
 		goto out;
 	}
@@ -220,5 +221,11 @@
 module_init(mod_init);
 module_exit(mod_exit);
 
+static struct x86_cpu_id __maybe_unused via_rng_cpu_id[] = {
+	X86_FEATURE_MATCH(X86_FEATURE_XSTORE),
+	{}
+};
+
 MODULE_DESCRIPTION("H/W RNG driver for VIA CPU with PadLock");
 MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(x86cpu, via_rng_cpu_id);