linux-kernel - Re: [PATCH 3/5] i3c: svc: rename read_len as actual

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Message-ID: <ZS7yATy4RmLVFohO@lizhi-Precision-Tower-5810>
Date:   Tue, 17 Oct 2023 16:43:45 -0400
From:   Frank Li <Frank.li@....com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     alexandre.belloni@...tlin.com, conor.culhane@...vaco.com,
        joe@...ches.com, linux-i3c@...ts.infradead.org,
        linux-kernel@...r.kernel.org, imx@...ts.linux.dev
Subject: Re: [PATCH 3/5] i3c: svc: rename read_len as actual_len

On Tue, Oct 17, 2023 at 04:07:29PM +0200, Miquel Raynal wrote:
> Hi Frank,
> 
> Frank.Li@....com wrote on Mon, 16 Oct 2023 11:46:30 -0400:
> 
> > I3C transfer, target can early terminate transfer.
> > I2C transfer, target can NACK write transfer.
> > 
> > 'actual_len' is better name than 'read_len'.
> 
> I don't find read_len confusing because it may mean "how much bytes
> were actually read" rather than "how much we need to read". But if
> actual_len sounds better, I'm fine.

Another reason: According to i3c spec. 5.2.2.3.6 line 6090.
Target ends or continues the write transfer.

in HDR mode, target can end write transfer. So use 'actual_len'

Do you think I need add it to commit message

Frank

> 
> Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>
> 
> > 
> > Signed-off-by: Frank Li <Frank.Li@....com>
> 
> Thanks,
> Miquèl