Re: [PATCH] tpm: Move Linux RNG connection to hwrng
From: Jason Gunthorpe <hidden>
Date: 2017-10-25 15:19:23
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keyrings, linux-crypto, linux-security-module, lkml
On Wed, Oct 25, 2017 at 08:15:09PM +0530, PrasannaKumar Muralidharan wrote:
quoted
+static int tpm_add_hwrng(struct tpm_chip *chip) +{ + if (!IS_ENABLED(CONFIG_HW_RANDOM_TPM)) + return 0;Can #ifndef CONFIG_HW_RANDOM_TPM be used instead? That way an if condition can be avoided.
Generally speaking IS_ENABLED is prefered over #ifdef as it reduces the set of compilation combinations. Jason