Messages in this thread Patch in this message | | | Date | Tue, 2 May 2006 17:12:39 -0600 | From | "Jordan Crouse" <> | Subject | [PATCH] vt: Delay the update of the visible framebuffer console |
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This is a patch that delays updating the visible framebuffer console until the other consoles have been initialized in order to avoid losing output lines. This problem was discovered when loading a framebuffer driver as a module. Comments welcome.
Jordan [PATCH] vt: Delay the update of the visible framebuffer console
From: David Hollister <david.hollister@amd.com>
This patch delays the update of the visible framebuffer console until all other consoles have been initialized in order to avoid losing information. This only seems to be a problem with modules, not with built-in drivers.
Signed-off-by: David Hollister <david.hollister@amd.com> Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> ---
drivers/char/vt.c | 22 ++++++++++++++-------- 1 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index acc5d47..30f0f24 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -2700,9 +2700,11 @@ int take_over_console(const struct consw if (!vc || !vc->vc_sw) continue; - j = i; - if (CON_IS_VISIBLE(vc)) + if (CON_IS_VISIBLE(vc)) { + j = i; save_screen(vc); + } + old_was_color = vc->vc_can_do_color; vc->vc_sw->con_deinit(vc); vc->vc_origin = (unsigned long)vc->vc_screenbuf; @@ -2718,17 +2720,21 @@ int take_over_console(const struct consw */ if (old_was_color != vc->vc_can_do_color) clear_buffer_attributes(vc); - - if (CON_IS_VISIBLE(vc)) - update_screen(vc); } + printk("Console: switching "); if (!deflt) printk("consoles %d-%d ", first+1, last+1); - if (j >= 0) + if (j >= 0) { + struct vc_data *vc = vc_cons[j].d; + printk("to %s %s %dx%d\n", - vc_cons[j].d->vc_can_do_color ? "colour" : "mono", - desc, vc_cons[j].d->vc_cols, vc_cons[j].d->vc_rows); + vc->vc_can_do_color ? "colour" : "mono", + desc, vc->vc_cols, vc->vc_rows); + + if (CON_IS_VISIBLE(vc)) + update_screen(vc); + } else printk("to %s\n", desc); | |