From: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> commit ecff6813d2bcf0c670881a9ba3f51cb032dd405a upstream. tpm_amd_is_rng_defective is for dealing with an issue related to the AMD firmware TPM, so on non-x86 architectures just have it inline and return false. Cc: stable@xxxxxxxxxxxxxxx # v6.3+ Reported-by: Sachin Sant <sachinp@xxxxxxxxxxxxx> Reported-by: Aneesh Kumar K. V <aneesh.kumar@xxxxxxxxxxxxx> Closes: https://lore.kernel.org/lkml/99B81401-DB46-49B9-B321-CF832B50CAC3@xxxxxxxxxxxxx/ Fixes: f1324bbc4011 ("tpm: disable hwrng for fTPM on some AMD designs") Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/char/tpm/tpm-chip.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -518,6 +518,7 @@ static int tpm_add_legacy_sysfs(struct t * 6.x.y.z series: 6.0.18.6 + * 3.x.y.z series: 3.57.y.5 + */ +#ifdef CONFIG_X86 static bool tpm_amd_is_rng_defective(struct tpm_chip *chip) { u32 val1, val2; @@ -566,6 +567,12 @@ release: return true; } +#else +static inline bool tpm_amd_is_rng_defective(struct tpm_chip *chip) +{ + return false; +} +#endif /* CONFIG_X86 */ static int tpm_hwrng_read(struct hwrng *rng, void *data, size_t max, bool wait) {
