hwrng: via - support new Centaur CPU
authordavidwang <davidwang@zhaoxin.com>
Fri, 13 Apr 2018 07:03:03 +0000 (15:03 +0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 20 Apr 2018 16:59:03 +0000 (00:59 +0800)
New Centaur CPU(Family > 6) supprt Random Number Generator, but can't
support MSR_VIA_RNG. Just like VIA Nano.

Signed-off-by: David Wang <davidwang@zhaoxin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/char/hw_random/via-rng.c

index 6e9df55..ffe9b0c 100644 (file)
@@ -135,7 +135,7 @@ static int via_rng_init(struct hwrng *rng)
         * is always enabled if CPUID rng_en is set.  There is no
         * RNG configuration like it used to be the case in this
         * register */
-       if ((c->x86 == 6) && (c->x86_model >= 0x0f)) {
+       if (((c->x86 == 6) && (c->x86_model >= 0x0f))  || (c->x86 > 6)){
                if (!boot_cpu_has(X86_FEATURE_XSTORE_EN)) {
                        pr_err(PFX "can't enable hardware RNG "
                                "if XSTORE is not enabled\n");