linux-kernel - Re: [PATCH] drm: imx: ipuv3-plane: fix HDMI cannot work for odd screen resolutions

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Message-ID: <2024090452-canola-unwoven-1c6c@gregkh>
Date: Wed, 4 Sep 2024 08:21:25 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Paul Pu <hui.pu@...ealthcare.com>
Cc: p.zabel@...gutronix.de,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Sasha Levin <sashal@...nel.org>,
	Lucas Stach <l.stach@...gutronix.de>, HuanWang@...ealthcare.com,
	taowang@...ealthcare.com, sebastian.reichel@...labora.com,
	ian.ray@...ealthcare.com, stable@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: imx: ipuv3-plane: fix HDMI cannot work for odd
 screen resolutions

On Wed, Sep 04, 2024 at 05:43:15AM +0300, Paul Pu wrote:
> This changes the judgement of if needing to round up the width or not,
> from using the `dp_flow` to the plane's type.
> 
> The `dp_flow` can be -22(-EINVAL) even the plane is a PRIMARY one.
> See `client_reg[]` in `ipu-common.c`.
> 
> [    0.605141] [drm:ipu_plane_init] channel 28, dp flow -22, possible_crtcs=0x0
> 
> Per the commit message in commit: 71f9fd5bcf09, using the plane type for
> judging if rounding up is needed is correct.
> 
> Fixes: 71f9fd5bcf09 ("drm/imx: ipuv3-plane: Fix overlay plane width")

That id is not in Linus's tree :(

> Cc: stable@...r.kernel.org
> 
> Signed-off-by: Paul Pu <hui.pu@...ealthcare.com>

No need for the blank line before this.

thanks,

greg k-h