From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org,
Johannes Schneider <johannes.schneider@leica-geosystems.com>
Subject: Re: [PATCH] video: lcdif: skip framebuffer registration when no display modes available
Date: Tue, 07 Jul 2026 08:59:01 +0200 [thread overview]
Message-ID: <178340754148.3636134.3535358681395505430.b4-ty@pengutronix.de> (raw)
In-Reply-To: <20260623192017.3338905-1-johannes.schneider@leica-geosystems.com>
On Tue, 23 Jun 2026 19:20:17 +0000, Johannes Schneider wrote:
> When the downstream VPL chain reports no modes (e.g. the panel-lvds
> node was runtime-disabled by board code on a unit shipped without a
> panel), the driver previously fell back to a 640x480 default,
> allocated a framebuffer, registered /dev/fb0, exported a (bogus)
> simplefb DT fixup to the kernel, and tried to fb_enable() the
> controller. fb_enable() then bailed because info->mode was NULL,
> but only after we'd already exported a non-functional simplefb to
> Linux's DRM_SIMPLEDRM and wasted ~1.2 MB on a buffer nothing
> scans out.
>
> [...]
Applied, thanks!
[1/1] video: lcdif: skip framebuffer registration when no display modes available
https://git.pengutronix.de/cgit/barebox/commit/?id=54878fe93a12 (link may not be stable)
Best regards,
--
Sascha Hauer <s.hauer@pengutronix.de>
prev parent reply other threads:[~2026-07-07 7:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 19:20 Johannes Schneider
2026-07-07 6:59 ` Sascha Hauer [this message]
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