From 6d83b0bb8e5efda28ce4a1abc78277f1d03e50e5 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Tue, 8 Nov 2005 21:39:05 -0800 Subject: [PATCH] [PATCH] savagefb: X-panning fixes 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/savage/savagefb_driver.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c index f0dfb35e3191..09e2f2841901 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_info *info) 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_info *info) 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 (struct fb_info *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; -- 2.20.1