Let's be more conservative and enable HMAC by default only for the
platforms where it immediately makes sense, i.e. x86-64 and aarch64.
This can be relaxed later on, and obviously the kconfig option can be
set even if not default on a particular arch.

Cc: James Bottomley <[email protected]>
Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Closes: 
https://lore.kernel.org/linux-integrity/[email protected]/
Signed-off-by: Jarkko Sakkinen <[email protected]>
---
 drivers/char/tpm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index e63a6a17793c..19e61dcfcbbe 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -29,7 +29,7 @@ if TCG_TPM
 
 config TCG_TPM2_HMAC
        bool "Use HMAC and encrypted transactions on the TPM bus"
-       default y
+       default X86_64 || ARM64
        select CRYPTO_ECDH
        select CRYPTO_LIB_AESCFB
        select CRYPTO_LIB_SHA256
-- 
2.45.1


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