linux-kernel - Re: [PATCH 0/7] RFC: Cell SPE logos

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.62.0702121452480.4624@pademelon.sonytel.be>
Date:	Mon, 12 Feb 2007 14:54:35 +0100 (CET)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	James Simmons <jsimmons@...radead.org>
cc:	Linux Frame Buffer Device Development 
	<linux-fbdev-devel@...ts.sourceforge.net>,
	Cell Broadband Engine OSS Development 
	<cbe-oss-dev@...abs.org>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/7] RFC: Cell SPE logos

On Wed, 31 Jan 2007, Geert Uytterhoeven wrote:
> I would like to hear your opinions about the patchset below (updated version
> compared to yesterday, lkml added to the CC list).
> 
> The Cell Broadband Engine contains a 64-bit PowerPC core with 2 hardware
> threads (called PPEs) and 8 Synergistic Processing Engines (called SPEs).
> When booting Linux, 2 penguins logos are shown on the graphical console by
> the standard frame buffer console logo code.
> 
> To emphasize the existence of the SPEs (which can be used under Linux), we
> added a second row of (smaller) helper penguin logos, one for each SPE.
> I attached a PNG version of the helper penguin logo for reference.
> 
> Summaries:
> [PATCH 1/7] fbdev: Avoid vertical overflow when making space for the logo
> [PATCH 2/7] fbdev: fb_do_show_logo() updates
> [PATCH 3/7] fbdev: extract fb_show_logo_line()
> [PATCH 4/7] fbdev: move logo externs to header file
> [PATCH 5/7] fbdev: Add fb_append_extra_logo()
> [PATCH 6/7] fbdev: SPE helper penguin logo
> [PATCH 7/7] Cell: Draw SPE helper penguin logos

The helper penguins overlap with the main penguins when using console rotation
(fbcon=rotate:x, with x != 0). Here's a fix:

---

Correct the image offsets when rotating the logo. Before image->dx and
image->dy were always zero, so nobody ever noticed.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
---
 drivers/video/fbmem.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

--- ps3-linux-2.6.20.orig/drivers/video/fbmem.c
+++ ps3-linux-2.6.20/drivers/video/fbmem.c
@@ -355,22 +355,26 @@ static void fb_rotate_logo(struct fb_inf
 	if (rotate == FB_ROTATE_UD) {
 		fb_rotate_logo_ud(image->data, dst, image->width,
 				  image->height);
-		image->dx = info->var.xres - image->width;
-		image->dy = info->var.yres - image->height;
+		image->dx = info->var.xres - image->width - image->dx;
+		image->dy = info->var.yres - image->height - image->dy;
 	} else if (rotate == FB_ROTATE_CW) {
 		fb_rotate_logo_cw(image->data, dst, image->width,
 				  image->height);
 		tmp = image->width;
 		image->width = image->height;
 		image->height = tmp;
-		image->dx = info->var.xres - image->width;
+		tmp = image->dy;
+		image->dy = image->dx;
+		image->dx = info->var.xres - image->width - tmp;
 	} else if (rotate == FB_ROTATE_CCW) {
 		fb_rotate_logo_ccw(image->data, dst, image->width,
 				   image->height);
 		tmp = image->width;
 		image->width = image->height;
 		image->height = tmp;
-		image->dy = info->var.yres - image->height;
+		tmp = image->dx;
+		image->dx = image->dy;
+		image->dy = info->var.yres - image->height - tmp;
 	}
 
 	image->data = dst;

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- Sony Network and Software Technology Center Europe (NSCE)
Geert.Uytterhoeven@...ycom.com ------- The Corporate Village, Da Vincilaan 7-D1
Voice +32-2-7008453 Fax +32-2-7008622 ---------------- B-1935 Zaventem, Belgium
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/