diff options
| author | Helge Deller <deller@gmx.de> | 2022-06-02 22:08:38 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2022-06-20 12:12:23 +0200 |
| commit | 3866cba87dcd0162fb41e9b3b653d0af68fad5ec (patch) | |
| tree | a03d6016ec394123ddf089a941b3d8a6c826e5f3 /drivers/video/fbdev/core | |
| parent | e4a8864f74e9e9e4a7eb93952a4cfa35c165c930 (diff) | |
| download | linux-3866cba87dcd0162fb41e9b3b653d0af68fad5ec.tar.bz2 | |
fbcon: Fix accelerated fbdev scrolling while logo is still shown
There is no need to directly skip over to the SCROLL_REDRAW case while
the logo is still shown.
When using DRM, this change has no effect because the code will reach
the SCROLL_REDRAW case immediately anyway.
But if you run an accelerated fbdev driver and have
FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION enabled, console scrolling is
slowed down by factors so that it feels as if you use a 9600 baud
terminal.
So, drop those unnecessary checks and speed up fbdev console
acceleration during bootup.
Cc: stable@vger.kernel.org # v5.10+
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YpkYxk7wsBPx3po+@p100
Diffstat (limited to 'drivers/video/fbdev/core')
| -rw-r--r-- | drivers/video/fbdev/core/fbcon.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index d765bbdf19dc..cb8d94d7feba 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1758,8 +1758,6 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, case SM_UP: if (count > vc->vc_rows) /* Maximum realistic size */ count = vc->vc_rows; - if (logo_shown >= 0) - goto redraw_up; switch (fb_scrollmode(p)) { case SCROLL_MOVE: fbcon_redraw_blit(vc, info, p, t, b - t - count, @@ -1848,8 +1846,6 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b, case SM_DOWN: if (count > vc->vc_rows) /* Maximum realistic size */ count = vc->vc_rows; - if (logo_shown >= 0) - goto redraw_down; switch (fb_scrollmode(p)) { case SCROLL_MOVE: fbcon_redraw_blit(vc, info, p, b - 1, b - t - count, |