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authorAntonino A. Daplas <adaplas@gmail.com>2007-07-17 04:05:32 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:11 -0700
commitd1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e (patch)
treebb1670cd6842187babf0b6e2792f9c736646dbbc /drivers/video/console
parent2f7bb99fc9eb7a3d3840dc0a507049b7be1daba8 (diff)
downloadblackbird-op-linux-d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e.tar.gz
blackbird-op-linux-d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e.zip
fbcon: set_con2fb_map fixes
set_con2fb_map() has regressed for some time. Using fbcon=map:01, for example, works only if there is only 1 working framebuffer. Trying to do a set_con2fb_map() on a non-allocated vc will freeze the system. - ensure that succeeding drivers after the first gets mapped to the console - remove fbcon_preset_display() and modify fbcon_set_display() to include the former's functionality - ensure that binding and unbinding succeeds if multiple drivers are mapped to the console Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/console')
-rw-r--r--drivers/video/console/fbcon.c64
1 files changed, 25 insertions, 39 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 7ba21eb1676c..13b67ee8b3c0 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -192,9 +192,7 @@ static __inline__ void ypan_down(struct vc_data *vc, int count);
static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break);
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
- struct vc_data *vc);
-static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
- int unit);
+ int unit);
static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
int line, int count, int dy);
static void fbcon_modechanged(struct fb_info *info);
@@ -745,7 +743,9 @@ static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
if (!err) {
info->fbcon_par = ops;
- set_blitting_type(vc, info);
+
+ if (vc)
+ set_blitting_type(vc, info);
}
if (err) {
@@ -807,11 +807,7 @@ static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
ops->flags |= FBCON_FLAGS_INIT;
ops->graphics = 0;
-
- if (vc)
- fbcon_set_disp(info, &info->var, vc);
- else
- fbcon_preset_disp(info, &info->var, unit);
+ fbcon_set_disp(info, &info->var, unit);
if (show_logo) {
struct vc_data *fg_vc = vc_cons[fg_console].d;
@@ -1116,6 +1112,9 @@ static void fbcon_init(struct vc_data *vc, int init)
if (var_to_display(p, &info->var, info))
return;
+ if (!info->fbcon_par)
+ con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
+
/* If we are not the first console on this
fb, copy the font from that console */
t = &fb_display[fg_console];
@@ -1382,36 +1381,29 @@ static int scrollback_phys_max = 0;
static int scrollback_max = 0;
static int scrollback_current = 0;
-/*
- * If no vc is existent yet, just set struct display
- */
-static void fbcon_preset_disp(struct fb_info *info, struct fb_var_screeninfo *var,
- int unit)
-{
- struct display *p = &fb_display[unit];
- struct display *t = &fb_display[fg_console];
-
- if (var_to_display(p, var, info))
- return;
-
- p->fontdata = t->fontdata;
- p->userfont = t->userfont;
- if (p->userfont)
- REFCOUNT(p->fontdata)++;
-}
-
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
- struct vc_data *vc)
+ int unit)
{
- struct display *p = &fb_display[vc->vc_num], *t;
- struct vc_data **default_mode = vc->vc_display_fg;
- struct vc_data *svc = *default_mode;
+ struct display *p, *t;
+ struct vc_data **default_mode, *vc;
+ struct vc_data *svc;
struct fbcon_ops *ops = info->fbcon_par;
int rows, cols, charcnt = 256;
+ p = &fb_display[unit];
+
if (var_to_display(p, var, info))
return;
+
+ vc = vc_cons[unit].d;
+
+ if (!vc)
+ return;
+
+ default_mode = vc->vc_display_fg;
+ svc = *default_mode;
t = &fb_display[svc->vc_num];
+
if (!vc->vc_font.data) {
vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
vc->vc_font.width = (*default_mode)->vc_font.width;
@@ -3118,8 +3110,7 @@ static int fbcon_fb_registered(struct fb_info *info)
ret = fbcon_takeover(1);
} else {
for (i = first_fb_vc; i <= last_fb_vc; i++) {
- if (con2fb_map_boot[i] == idx &&
- con2fb_map[i] == -1)
+ if (con2fb_map_boot[i] == idx)
set_con2fb_map(i, idx, 0);
}
}
@@ -3167,12 +3158,7 @@ static void fbcon_new_modelist(struct fb_info *info)
mode = fb_find_nearest_mode(fb_display[i].mode,
&info->modelist);
fb_videomode_to_var(&var, mode);
-
- if (vc)
- fbcon_set_disp(info, &var, vc);
- else
- fbcon_preset_disp(info, &var, i);
-
+ fbcon_set_disp(info, &var, vc->vc_num);
}
}
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