From: "Antonino A. Daplas" <adaplas@gmail.com>
To: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Andrew Morton <akpm@osdl.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [PATCH 1/1: 2.6.15-rc5-git3] Disable ywrap if not supported by fbcon scrolling code
Date: Tue, 13 Dec 2005 23:43:55 +0800 [thread overview]
Message-ID: <439EEC3B.1050603@gmail.com> (raw)
In-Reply-To: <439ECBE8.5090002@t-online.de>
Knut Petersen wrote:
> updatescrollmode() must not select ywrap scrolling if
> divides(vc->vc_font.height, yres) is not true as this is not
> supported by the actual ywrap scrolling code.
>
> The bug is triggered with e.g. mode 800x600, vxres 1024,
> vyres 8192, bpp 8, font dimensions 8x16, 8Mb video ram
> and FBINFO_HWACCEL_YWRAP set. If those conditions
> are met, scrolling is broken and garbage is permanently
> displayed at the bottom of the screen.
>
> No regression, no possible side effects.
>
> Definitely needed by cyblafb and probably needed by amifb.
>
> Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Acked-by: Antonino Daplas <adaplas@pol.net>
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prev parent reply other threads:[~2005-12-13 15:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-13 13:26 [PATCH 1/1: 2.6.15-rc5-git3] Disable ywrap if not supported by fbcon scrolling code Knut Petersen
2005-12-13 15:43 ` Antonino A. Daplas [this message]
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