Re: [PATCH 1/2] drm/vkms: Use index instead of 0 in possible crtc

From: Simon Ser
Date: Tue Jun 18 2019 - 03:52:50 EST

On Tuesday, June 18, 2019 5:19 AM, Rodrigo Siqueira <rodrigosiqueiramelo@xxxxxxxxx> wrote:
> I made the patch, but when I started to write the commit message, I just
> realized that I did not understand why possible_crtcs should not be
> equal zero. Why can we not use zero?


possible_crtcs is a bitfield. If it's zero, it means the plane cannot
be attached to any CRTC, which makes it rather useless.