Re: [PATCH] tpm: add support for partial reads

[Jason Gunthorpe]

On Mon, Jul 23, 2018 at 03:00:20PM -0700, Tadeusz Struk wrote:
> On 07/23/2018 02:56 PM, Jason Gunthorpe wrote:
> > The proposed patch doesn't clear the data_pending if the entire buffer
> > is not consumed, so of course it is ABI breaking, that really isn't OK.
> 
> The data_pending will be cleared by the timeout handler if the user doesn't
> read the response fully before the timeout expires. The is the same situation
> if the user would not read the response at all.

That causes write() to fail with EBUSY

NAK from me on breaking the ABI like this

Jason