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hwrng: via - support new Centaur CPU 

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>
This commit is contained in:
davidwang 2018-04-13 15:03:03 +08:00 committed by Herbert Xu
parent b2b4f84d9c
commit 49d1179573
1 changed files with 1 additions and 1 deletions
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2
drivers/char/hw_random/via-rng.c
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@ -135,7 +135,7 @@ static int via_rng_init(struct hwrng *rng)
* is always enabled if CPUID rng_en is set. There is no * is always enabled if CPUID rng_en is set. There is no
* RNG configuration like it used to be the case in this * RNG configuration like it used to be the case in this
* register */ * 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)) { if (!boot_cpu_has(X86_FEATURE_XSTORE_EN)) {
pr_err(PFX "can't enable hardware RNG " pr_err(PFX "can't enable hardware RNG "
"if XSTORE is not enabled\n"); "if XSTORE is not enabled\n");