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authorKrzysztof Helt <krzysztof.h1@wp.pl>2009-11-11 14:26:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-11-12 07:25:56 -0800
commitf5c15d0b37ab1cd3969b8ce7828ab41c79f36f77 (patch)
treea12aaef93ef8cc75eb5488294c64c5bf9d01546c /drivers/video/console
parent9d0ed60fe9cd1fbf57f755cd27a23ae9114d7210 (diff)
fb: remove fb_save_state() and fb_restore_state operations
Remove fb_save_state() and fb_restore_state operations from frame buffer layer. They are used only in two drivers: 1. savagefb - and cause bug #11248 2. uvesafb Usage of these operations is misunderstood in both drivers so kill these operations, fix the bug #11248 and avoid confusion in the future. Tested on Savage 3D/MV card and the patch fixes the bug #11248. The frame buffer layer uses these funtions during switch between graphics and text mode of the console, but these drivers saves state before switching of the frame buffer (in the fb_open) and after releasing it (in the fb_release). This defeats the purpose of these operations. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11248 Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Reported-by: Jochen Hein <jochen@jochen.org> Tested-by: Jochen Hein <jochen@jochen.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Januszewski <spock@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/console')
-rw-r--r--drivers/video/console/fbcon.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 5a686cea23f..3681c6a8821 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2311,14 +2311,11 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
ops->graphics = 1;
if (!blank) {
- if (info->fbops->fb_save_state)
- info->fbops->fb_save_state(info);
var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
fb_set_var(info, &var);
ops->graphics = 0;
ops->var = info->var;
- } else if (info->fbops->fb_restore_state)
- info->fbops->fb_restore_state(info);
+ }
}
if (!fbcon_is_inactive(vc, info)) {