Re: [PATCH] tpm: moves the delay_msec increment after sleep in tpm_transmit()

From: Jarkko Sakkinen
Date: Sat Apr 07 2018 - 06:38:32 EST


On Fri, Apr 06, 2018 at 02:03:37PM +0530, Nayna Jain wrote:
> On 04/05/2018 03:42 PM, Jarkko Sakkinen wrote:
> > On Mon, Apr 02, 2018 at 09:50:06PM +0530, Nayna Jain wrote:
> > > Commit e2fb992d82c6 ("tpm: add retry logic") introduced a new loop to
> > > handle the TPM2_RC_RETRY error. The loop retries the command after
> > > sleeping for the specified time, which is incremented exponentially in
> > > every iteration. This patch fixes the initial sleep to be the default
> > > sleep time.
> > I think I understand the code change but do not understand what the
> > long description.
>
> It tells that the first sleep is delay_msec * 2 and not delay_msec.

So the problem is that the loop doubles the time before sleeping
for the first time. This is missing from the description. Please
refine it in some way.

/Jarkko