linux-kernel - Re: [v5 PATCH 7/7] crypto: stm32 - Save and restore between each request

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Message-ID: <ZAmuFhOXo9ag5F8e@gondor.apana.org.au>
Date:   Thu, 9 Mar 2023 17:59:50 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Lionel Debieve <lionel.debieve@...s.st.com>,
        Li kunyu <kunyu@...china.com>, davem@...emloft.net,
        linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com, mcoquelin.stm32@...il.com
Subject: Re: [v5 PATCH 7/7] crypto: stm32 - Save and restore between each
 request

On Thu, Mar 09, 2023 at 08:35:21AM +0100, Linus Walleij wrote:
>
> The way I interpret it is that if you write 64 bytes (16 32bit words)
> the AHB bus will simply
> stall until the data is processed, so the writel() hangs there and
> then 66/82 bus cycles
> later it will continue.

You're right.  I'll respin the patches with your updates in it.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt