Re: [PATCH] tpm: Move Linux RNG connection to hwrng

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On Wed, Oct 25, 2017 at 08:15:09PM +0530, PrasannaKumar Muralidharan
wrote:

> > +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



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