linux-kernel - Re: [PATCH] staging: fbtft: Use ARRAY

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Message-ID: <Y2UkwwUn+IaCq3wf@qemulion>
Date:   Fri, 4 Nov 2022 20:12:11 +0530
From:   Deepak R Varma <drv@...lo.com>
To:     Julia Lawall <julia.lawall@...ia.fr>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     outreachy@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: fbtft: Use ARRAY_SIZE() to get argument count

On Fri, Nov 04, 2022 at 05:31:24PM +0530, Deepak R Varma wrote:
> On Mon, Oct 31, 2022 at 01:05:32PM +0100, Julia Lawall wrote:
> >
> >
> > I took a look, but it's pretty complex.  You could take the code and
> > reorganize it so that it is more readable, and then take the definition of
> > the ARRAY_SIZE macro, to better see what is going on.
> >
> > julia
> >
>
> Hello Greg, Julia,
> I was able to successfully build the fbtft object file for arm architecture as
> well. I used gcc 6.5.0 and 9.5.0 tool chains. It was successful using both. I
> have attached the build log from my machine for your reference.
>
> I am also looking at the .i file and rearrange the expanded macro to understand
> it. However, since it is built successfully, I am not sure if that is truly the
> problem area.
>
> Should I resend the patch and check if it still errors the kernel build bot?
> Anything else I can try?

Looks like the change I proposed is causing nesting inside the write_reg
function due to additional set of { & } brackets for the __VA_ARGS__ symbol.

Am I understanding it right?

>
> Thank you,
> ./drv