linux-kernel - Re: [PATCH v3 0/5] console: Miscellaneous clean-ups, do not use FNTCHARCNT() in fbcon.c

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Message-ID: <20201116153358.GB401619@phenom.ffwll.local>
Date:   Mon, 16 Nov 2020 16:33:58 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Peilin Ye <yepeilin.cs@...il.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v3 0/5] console: Miscellaneous clean-ups, do not use
 FNTCHARCNT() in fbcon.c

On Fri, Nov 13, 2020 at 11:47:51PM +0100, Greg Kroah-Hartman wrote:
> On Fri, Nov 13, 2020 at 10:16:33PM +0100, Daniel Vetter wrote:
> > On Thu, Nov 12, 2020 at 07:02:21AM -0500, Peilin Ye wrote:
> > > Hi all,
> > > 
> > > This is a collection of some miscellaneous clean-ups for fbcon and some
> > > console drivers. Since v2, I rebased them on linux-next, added some
> > > Reviewed-by: tags from Daniel and Greg, and rewrote the commit messages as
> > > suggested by Jiri. See [1] for v2 links.
> > > 
> > > It does the following:
> > > 
> > >   - Garbage collect KD_FONT_OP_COPY callbacks since we disabled it
> > >     recently. Mark it as obsolete.
> > >   - Delete dummy con_font_op() callbacks. (Reviewed by Greg)
> > > 
> > >   - Add a charcount field to our new font descriptor, `struct font_desc`.
> > >     (Reviewed by Daniel)
> > >   - Do not use a hard-coded 256 for built-in font charcount in
> > >     console/sticore.c, use the new charcount field of `struct font_desc`
> > >     instead. (Reviewed by Daniel)
> > >   - Similarly, in fbcon.c, avoid using the magic negative-indexing macro,
> > >     FNTCHARCNT(). Set `vc->vc_font.charcount` properly and always use that
> > >     instead.
> > > 
> > > Daniel, hopefully [5/5] removes FNTCHARCNT() for ever, but I have not
> > > tested it sufficiently yet. I remember you mentioned elsewhere that
> > > "fbtest.c" is insufficient for framebuffer testing, then how should we
> > > test it? The first 4 patches should be fine.
> > > 
> > > Please reference commit messages for more information. Thank you!
> > > 
> > > [1] v2 links:
> > > 
> > > 2/5: https://lore.kernel.org/lkml/c5563eeea36aae7bd72ea2e985bc610d585ece40.1604306433.git.yepeilin.cs@gmail.com/
> > > 3/5: https://lore.kernel.org/lkml/20201028060533.1206307-1-yepeilin.cs@gmail.com/
> > > 4/5: https://lore.kernel.org/lkml/c38042bbf5c9777c84900d56c09f3c156b32af48.1603788512.git.yepeilin.cs@gmail.com/
> > > 5/5: https://lore.kernel.org/lkml/20201028155139.1220549-1-yepeilin.cs@gmail.com/
> > > 
> > > Peilin Ye (5):
> > >   console: Delete unused con_font_copy() callback implementations
> > >   console: Delete dummy con_font_set() and con_font_default() callback implementations
> > >   Fonts: Add charcount field to font_desc
> > >   parisc/sticore: Avoid hard-coding built-in font charcount
> > >   fbcon: Avoid using FNTCHARCNT() and hard-coded built-in font charcount
> > 
> > Patches all look good to me, if Greg is ok with me applying the entire
> > pile to drm-misc-next I'll do that next week.
> 
> Yes, please do!
> 
> Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Pulled entire series into drm-misc-next.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch