[PATCH 6/9] vt: Delay the update of the visible console
DORMANTno replies
From: "Antonino A. Daplas" <adaplas@gmail.com>
Date: 2006-05-04 12:38:08
Subsystem:
char and misc drivers, the rest · Maintainers:
Arnd Bergmann, Greg Kroah-Hartman, Linus Torvalds
From: David Hollister <redacted> 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 <redacted> Signed-off-by: Jordan Crouse <redacted> Signed-off-by: Antonino Daplas <redacted> --- drivers/char/vt.c | 26 +++++++++++++++++--------- 1 files changed, 17 insertions(+), 9 deletions(-)
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 78e0bd2..5251c0c 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c@@ -2663,7 +2663,7 @@ int __init vty_init(void) int take_over_console(const struct consw *csw, int first, int last, int deflt) { - int i, j = -1; + int i, j = -1, k = -1; const char *desc; struct module *owner;
@@ -2699,8 +2699,11 @@ int take_over_console(const struct consw continue; j = i; - if (CON_IS_VISIBLE(vc)) + if (CON_IS_VISIBLE(vc)) { + k = 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;
@@ -2716,18 +2719,23 @@ 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); - else + vc->vc_can_do_color ? "colour" : "mono", + desc, vc->vc_cols, vc->vc_rows); + + if (k >= 0) { + vc = vc_cons[k].d; + update_screen(vc); + } + } else printk("to %s\n", desc); release_console_sem(); -------------------------------------------------------
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