diff options
| author | Helge Deller <deller@gmx.de> | 2022-06-02 23:08:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-21 16:15:22 +0300 |
| commit | d65c3fcd6dfaa94e35672bfcbe4ebf0bd5159d2e (patch) | |
| tree | a8aea2e37d39f9ea24f608493cece696bfe001a2 /drivers/video/fbdev/core | |
| parent | 16badd9987360218291a7623827ec9576007ab5f (diff) | |
| download | linux-d65c3fcd6dfaa94e35672bfcbe4ebf0bd5159d2e.tar.xz | |
fbcon: Fix accelerated fbdev scrolling while logo is still shown
commit 3866cba87dcd0162fb41e9b3b653d0af68fad5ec upstream.
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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 bc6a17579659..2618d3beef64 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1719,8 +1719,6 @@ 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, @@ -1809,8 +1807,6 @@ 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, |