Re: [PATCH 2/2] tpm_crb: Raise timeouts for Amazon NitroTPM

[Surendran Kanagaraj <surenkj@amazon.com>]

On Fri, Sep 25, 2026, Jarkko Sakkinen wrote:
> On Wed, Sep 23, 2026 at 02:28:34PM +0000, Surendran Kanagaraj wrote:
> > +/* Longest unavailability seen from NitroTPM */
> > +#define CRB_AMZN_BUSY_TIMEOUT_MS     30000
>
> Use TPM_CRB prefix.

Thanks for taking time to review my patches. Will update this in v2.

> > +	crb_apply_vendor_quirks(priv, chip);
>
> I.e., all this complexity equals to:
>
>         if (crb_vendor_id(priv) == CRB_INTF_VID_AMZN)
>                 chip->busy_timeout_ms = CRB_AMZN_BUSY_TIMEOUT_MS;
>
> ?

Yes. I added the table to keep vendor specific quirks out of the probe
and could be extended without touching the probe. tpm_tis_core does
something similar with vendor_dur_overrides. what do you think? I am
happy to switch to the plain check if you prefer.

Thanks,
Surendran