Re: [PATCH 1/1] Revert "drm/edid: Fix csync detailed mode parsing"

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Dec 06, 2023 at 11:49:46AM +0300, kovalev@altlinux.org wrote:
> From: Vasiliy Kovalev <kovalev@altlinux.org>
> 
> This reverts commit 5a46dc8e4a064769e916d87bf9bccae75afc7289.
> 
> Commit 50b6f2c8297793f7f3315623db78dcff85158e96 upstream.
> 
> Commit 5a46dc8e4a0647 ("drm/edid: Fix csync detailed mode parsing") fixed
> EDID detailed mode sync parsing. Unfortunately, there are quite a few
> displays out there that have bogus (zero) sync field that are broken by
> the change. Zero means analog composite sync, which is not right for
> digital displays, and the modes get rejected. Regardless, it used to
> work, and it needs to continue to work. Revert the change.
> 
> Rejecting modes with analog composite sync was the part that fixed the
> gitlab issue 8146 [1]. We'll need to get back to the drawing board with
> that.
> 
> [1] https://gitlab.freedesktop.org/drm/intel/-/issues/8146
> 
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8789
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8930
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9044
> Fixes: 5a46dc8e4a0647 ("drm/edid: Fix csync detailed mode parsing")
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: <stable@vger.kernel.org> # v6.4+
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Link: https://patchwork.freedesktop.org/patch/msgid/20230815101907.2900768-1-jani.nikula@intel.com
> Signed-off-by: Vasiliy Kovalev <kovalev@altlinux.org>
> ---
>  drivers/gpu/drm/drm_edid.c | 26 +++++++-------------------
>  include/drm/drm_edid.h     | 12 +++---------
>  2 files changed, 10 insertions(+), 28 deletions(-)

You sent this 3 times, why?  And what tree is this backport for?  It's
already in the respective stable releases, right?

confused,

greg k-h