From: Helge Deller deller@gmx.de
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 --- drivers/video/fbdev/core/fbcon.c | 4 ---- 1 file changed, 4 deletions(-)
--- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1706,8 +1706,6 @@ static bool fbcon_scroll(struct vc_data 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, @@ -1796,8 +1794,6 @@ static bool fbcon_scroll(struct vc_data 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,