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Date:   Fri, 14 Feb 2020 11:39:42 +0800
From:   Herbert Xu <>
To:     Iuliana Prodan <>
Cc:     Baolin Wang <>,
        Ard Biesheuvel <>,
        Corentin Labbe <>,
        Horia Geanta <>,
        Maxime Coquelin <>,
        Alexandre Torgue <>,
        Maxime Ripard <>,
        Aymen Sghaier <>,
        "David S. Miller" <>,
        Silvano Di Ninno <>,
        Franck Lenormand <>,
        "" <>,
        "" <>,
        dl-linux-imx <>
Subject: Re: [PATCH v3 1/2] crypto: engine - support for parallel requests

On Fri, Feb 14, 2020 at 01:25:50AM +0000, Iuliana Prodan wrote:
> Given your suggestion, I’m thinking of implementing do_one_request, in 
> the driver, to return -IN_PROGRESS if the hw can enqueue more and -EBUSY 
> if otherwise (solution 1). But, this implies to update all the drivers 
> that use crypto-engine (something I wouldn’t mind doing, but I don’t 
> have the hw to test it).

We could always maintain a legacy interface for existing drivers
until they are all converted.

Email: Herbert Xu <>
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