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authorPrarit Bhargava <prarit@redhat.com>2019-02-08 19:24:49 +0100
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2019-02-08 19:24:49 +0100
commit10993504d647356196a04b3022d645ec92e00159 (patch)
tree311d8ae5df6baeb0b5b51b193f286a468f6e6524 /drivers/video
parenta1939185c7a907f91b40da259a610ce2e2da9e18 (diff)
fbcon: Silence fbcon logo on 'quiet' boots
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 v5: Only set FBCON_LOGO_DONTSHOW for console loglevel Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Marko Myllynen <myllynen@redhat.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Kees Cook <keescook@chromium.org> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Thierry Reding <treding@nvidia.com> Cc: Yisheng Xie <ysxie@foxmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/core/fbcon.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index fd430e6b4c63..cd059a801662 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -656,11 +656,14 @@ 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;
}
@@ -1066,6 +1069,9 @@ static void fbcon_init(struct vc_data *vc, int init)
cap = info->flags;
+ if (console_loglevel <= CONSOLE_LOGLEVEL_QUIET)
+ logo_shown = FBCON_LOGO_DONTSHOW;
+
if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
(info->fix.type == FB_TYPE_TEXT))
logo = 0;