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authorKnut Petersen <Knut_Petersen@t-online.de>2006-01-07 10:22:04 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-07 10:39:34 -0800
commitd354d9afe923eb08f7ee89128b38ddb6415de01d (patch)
treeb4ce49dd4ad6963bff6b69ba413f074b11114837 /drivers
parentf9a204e1de73a7007de66fb289e1d64a7665c9b4 (diff)
downloadlinux-d354d9afe923eb08f7ee89128b38ddb6415de01d.tar.gz
[PATCH] fbcon: donīt call set_par() in fbcon_init() if vc_mode == KD_GRAPHICS
Nothing prevents a user to modprobe a framebuffer driver from e.g.  the
xterm prompt.  As a result, the set_par() function of the driver will be
called from fbcon_init().

This is fatal as a lot of X / framebuffer combinations are unable to
recover from set_par() reprogramming the graphics controller in
KD_GRAPHICS mode.

It is also unnecessary as the set_par() function will be called during a
switch to KD_TEXT anyway.  Because of this no side effects are possible.

Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/console/fbcon.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 3660e51b2612..50e4c4eb491f 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -1110,7 +1110,7 @@ static void fbcon_init(struct vc_data *vc, int init)
 	 *
 	 * We need to do it in fbcon_init() to prevent screen corruption.
 	 */
-	if (CON_IS_VISIBLE(vc)) {
+	if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
 		if (info->fbops->fb_set_par &&
 		    !(ops->flags & FBCON_FLAGS_INIT))
 			info->fbops->fb_set_par(info);