On text-based systems the 'quiet' boot option will show printk levels
higher than CONSOLE_LOGLEVEL_QUIET. The displaying of the Tux logo
during boot can cause some consoles to lose display data and as a result
confuse the end user.
Do not display the Tux logo on systems that are in 'quiet' boot.
v2: It helps to commit all my changes before sending them. Remove extra
bracket.
v3: buildbot error fix: fbcon can be built as part of a module so export console_printk
v4: move console_printk change to separate patch, and drop logo cleanup
Signed-off-by: Prarit Bhargava <prarit@xxxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: Marko Myllynen <myllynen@xxxxxxxxxx>
Cc: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Thierry Reding <treding@xxxxxxxxxx>
Cc: Yisheng Xie <ysxie@xxxxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
drivers/video/fbdev/core/fbcon.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 8976190b6c1f..66e37bdff1d9 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -649,11 +649,14 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
kfree(save);
}
+ if (logo_shown == FBCON_LOGO_DONTSHOW)
+ return;
+
if (logo_lines > vc->vc_bottom) {
logo_shown = FBCON_LOGO_CANSHOW;
printk(KERN_INFO
"fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
- } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
+ } else {
logo_shown = FBCON_LOGO_DRAW;
vc->vc_top = logo_lines;
}
@@ -1059,9 +1062,11 @@ static void fbcon_init(struct vc_data *vc, int init)
cap = info->flags;
- if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
- (info->fix.type == FB_TYPE_TEXT))
+ if (vc != svc || console_loglevel <= CONSOLE_LOGLEVEL_QUIET ||
+ (info->fix.type == FB_TYPE_TEXT)) {
logo = 0;
+ logo_shown = FBCON_LOGO_DONTSHOW;
+ }
if (var_to_display(p, &info->var, info))
return;
--
2.17.2
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