From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: [PATCH 1/7] savagefb: X-panning fixes Date: Mon, 07 Nov 2005 19:14:43 +0800 Message-ID: <436F3723.7000203@gmail.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1EZ5BR-0004Ub-EV for linux-fbdev-devel@lists.sourceforge.net; Mon, 07 Nov 2005 03:29:05 -0800 Received: from xproxy.gmail.com ([66.249.82.195]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1EZ5BR-0005He-7N for linux-fbdev-devel@lists.sourceforge.net; Mon, 07 Nov 2005 03:29:05 -0800 Received: by xproxy.gmail.com with SMTP id s6so405804wxc for ; Mon, 07 Nov 2005 03:29:04 -0800 (PST) Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: Andrew Morton Cc: Linux Fbdev development list The driver unconditionally sets xpanstep to 2. However, a value of 4 empirically works better at bpp = 8, and 2 for 16 and 32. This buglet was exposed by the rotation code. Second fix is the unconditional call to update_start() without verifying if the offsets are correct. Remove this call, it's not necessary and secondly, it causes a crash with invalid values. Signed-off-by: Antonino Daplas --- savagefb_driver.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c index f0dfb35..09e2f28 100644 --- a/drivers/video/savage/savagefb_driver.c +++ b/drivers/video/savage/savagefb_driver.c @@ -1315,10 +1315,14 @@ static void savagefb_set_fix(struct fb_i info->fix.line_length = info->var.xres_virtual * info->var.bits_per_pixel / 8; - if (info->var.bits_per_pixel == 8) + if (info->var.bits_per_pixel == 8) { info->fix.visual = FB_VISUAL_PSEUDOCOLOR; - else + info->fix.xpanstep = 4; + } else { info->fix.visual = FB_VISUAL_TRUECOLOR; + info->fix.xpanstep = 2; + } + } #if defined(CONFIG_FB_SAVAGE_ACCEL) @@ -1363,7 +1367,6 @@ static int savagefb_set_par (struct fb_i par->minClock = 10000; savagefb_set_par_int (par); - savagefb_update_start (par, var); fb_set_cmap (&info->cmap, info); savagefb_set_fix(info); savagefb_set_clip(info); @@ -1873,7 +1876,6 @@ static int __devinit savage_init_fb_info info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.type_aux = 0; - info->fix.xpanstep = 2; info->fix.ypanstep = 1; info->fix.ywrapstep = 0; info->fix.accel = id->driver_data; ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php