linux-kernel - Re: [PATCH v2 18/18] fbdev: Document that framebuffer

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Date:   Thu, 13 Jul 2023 15:21:34 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>
Cc:     deller@....de, javierm@...hat.com, linux-sh@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org, linux-fbdev@...r.kernel.org,
        linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        linux-geode@...ts.infradead.org, linux-nvidia@...ts.surfsouth.com,
        linux-hyperv@...r.kernel.org, linux-omap@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, kvm@...r.kernel.org,
        Miguel Ojeda <ojeda@...nel.org>
Subject: Re: [PATCH v2 18/18] fbdev: Document that framebuffer_alloc() returns
 zero'ed data

On Thu, Jul 13, 2023 at 3:03 PM Thomas Zimmermann <tzimmermann@...e.de> wrote:
>
> Most fbdev drivers depend on framebuffer_alloc() to initialize the
> allocated memory to 0. Document this guarantee.
>
> Suggested-by: Miguel Ojeda <ojeda@...nel.org>
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> Cc: Helge Deller <deller@....de>

Thanks for sending this! Maybe this would be best earlier in the
series, so that later patches make more sense (since they use the
guarantee), but it is not a big deal.

> + * aligned to sizeof(long). Both, the instance of struct fb_info and
> + * the driver private data, are cleared to zero.

I think both commas may be best omitted (but I am not a native speaker).

Reviewed-by: Miguel Ojeda <ojeda@...nel.org>

Cheers,
Miguel