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-rw-r--r--drivers/video/console/fbcon.c155
1 files changed, 97 insertions, 58 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 0b742497055..4b7be685c16 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -194,7 +194,8 @@ 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);
static void fbcon_set_all_vcs(struct fb_info *info);
-
+static void fbcon_start(void);
+static void fbcon_exit(void);
static struct class_device *fbcon_class_device;
#ifdef CONFIG_MAC
@@ -391,15 +392,18 @@ static void fb_flashcursor(void *private)
int c;
int mode;
- if (ops->currcon != -1)
+ acquire_console_sem();
+ if (ops && ops->currcon != -1)
vc = vc_cons[ops->currcon].d;
if (!vc || !CON_IS_VISIBLE(vc) ||
fbcon_is_inactive(vc, info) ||
registered_fb[con2fb_map[vc->vc_num]] != info ||
- vc_cons[ops->currcon].d->vc_deccm != 1)
+ vc_cons[ops->currcon].d->vc_deccm != 1) {
+ release_console_sem();
return;
- acquire_console_sem();
+ }
+
p = &fb_display[vc->vc_num];
c = scr_readw((u16 *) vc->vc_pos);
mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
@@ -2101,12 +2105,11 @@ static int fbcon_switch(struct vc_data *vc)
if (info->fbops->fb_set_par)
info->fbops->fb_set_par(info);
- if (old_info != info) {
+ if (old_info != info)
fbcon_del_cursor_timer(old_info);
- fbcon_add_cursor_timer(info);
- }
}
+ fbcon_add_cursor_timer(info);
set_blitting_type(vc, info);
ops->cursor_reset = 1;
@@ -2847,7 +2850,8 @@ static int fbcon_fb_registered(int idx)
ret = fbcon_takeover(1);
} else {
for (i = 0; i < MAX_NR_CONSOLES; i++) {
- if (con2fb_map_boot[i] == idx)
+ if (con2fb_map_boot[i] == idx &&
+ con2fb_map[i] == -1)
set_con2fb_map(i, idx, 0);
}
}
@@ -3046,9 +3050,32 @@ err:
return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
}
+static ssize_t store_attach(struct class_device *class_device,
+ const char *buf, size_t count)
+{
+ if (info_idx == -1)
+ fbcon_start();
+
+ return count;
+}
+
+static ssize_t store_detach(struct class_device *class_device,
+ const char *buf, size_t count)
+{
+ if (info_idx != -1) {
+ fbcon_exit();
+ give_up_console(&fb_con);
+ }
+
+ info_idx = -1;
+ return count;
+}
+
static struct class_device_attribute class_device_attrs[] = {
__ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
__ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
+ __ATTR(attach, S_IWUSR, NULL, store_attach),
+ __ATTR(detach, S_IWUSR, NULL, store_detach),
};
static int fbcon_init_class_device(void)
@@ -3061,67 +3088,31 @@ static int fbcon_init_class_device(void)
return 0;
}
-static int __init fb_console_init(void)
+static void fbcon_start(void)
{
- int i;
-
- acquire_console_sem();
- fb_register_client(&fbcon_event_notifier);
- release_console_sem();
-
- fbcon_class_device =
- class_device_create(fb_class, NULL,
- MKDEV(FB_MAJOR, FB_MAX), NULL,
- "fbcon");
- if (IS_ERR(fbcon_class_device)) {
- printk(KERN_WARNING "Unable to create class_device "
- "for fbcon; errno = %ld\n",
- PTR_ERR(fbcon_class_device));
- fbcon_class_device = NULL;
- } else
- fbcon_init_class_device();
+ if (num_registered_fb) {
+ int i;
- for (i = 0; i < MAX_NR_CONSOLES; i++)
- con2fb_map[i] = -1;
+ acquire_console_sem();
- if (num_registered_fb) {
for (i = 0; i < FB_MAX; i++) {
if (registered_fb[i] != NULL) {
info_idx = i;
break;
}
}
+
+ release_console_sem();
fbcon_takeover(0);
}
-
- return 0;
-}
-
-module_init(fb_console_init);
-
-#ifdef MODULE
-
-static void __exit fbcon_deinit_class_device(void)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_remove_file(fbcon_class_device,
- &class_device_attrs[i]);
}
-static void __exit fbcon_exit(void)
+static void fbcon_exit(void)
{
struct fb_info *info;
int i, j, mapped;
- for (i = 0; i < FB_MAX; i++) {
- info = registered_fb[i];
-
- if (info && info->fbcon_par)
- fbcon_del_cursor_timer(info);
- }
-
+ acquire_console_sem();
#ifdef CONFIG_ATARI
free_irq(IRQ_AUTO_4, fbcon_vbl_handler);
#endif
@@ -3131,6 +3122,7 @@ static void __exit fbcon_exit(void)
#endif
kfree((void *)softback_buf);
+ softback_buf = 0UL;
for (i = 0; i < FB_MAX; i++) {
mapped = 0;
@@ -3150,22 +3142,69 @@ static void __exit fbcon_exit(void)
if (info->fbops->fb_release)
info->fbops->fb_release(info, 0);
module_put(info->fbops->owner);
- kfree(info->fbcon_par);
- info->fbcon_par = NULL;
+
+ if (info->fbcon_par) {
+ fbcon_del_cursor_timer(info);
+ kfree(info->fbcon_par);
+ info->fbcon_par = NULL;
+ }
+
+ if (info->queue.func == fb_flashcursor)
+ info->queue.func = NULL;
+
}
}
- fbcon_deinit_class_device();
- class_device_destroy(fb_class, MKDEV(FB_MAJOR, FB_MAX));
+ release_console_sem();
+}
+
+static int __init fb_console_init(void)
+{
+ int i;
+
+ acquire_console_sem();
+ fb_register_client(&fbcon_event_notifier);
+ fbcon_class_device =
+ class_device_create(fb_class, NULL,
+ MKDEV(FB_MAJOR, FB_MAX), NULL,
+ "fbcon");
+
+ if (IS_ERR(fbcon_class_device)) {
+ printk(KERN_WARNING "Unable to create class_device "
+ "for fbcon; errno = %ld\n",
+ PTR_ERR(fbcon_class_device));
+ fbcon_class_device = NULL;
+ } else
+ fbcon_init_class_device();
+
+ for (i = 0; i < MAX_NR_CONSOLES; i++)
+ con2fb_map[i] = -1;
+
+ release_console_sem();
+ fbcon_start();
+ return 0;
+}
+
+module_init(fb_console_init);
+
+#ifdef MODULE
+
+static void fbcon_deinit_class_device(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
+ class_device_remove_file(fbcon_class_device,
+ &class_device_attrs[i]);
}
static void __exit fb_console_exit(void)
{
acquire_console_sem();
fb_unregister_client(&fbcon_event_notifier);
- fbcon_exit();
+ fbcon_deinit_class_device();
+ class_device_destroy(fb_class, MKDEV(FB_MAJOR, FB_MAX));
release_console_sem();
- give_up_console(&fb_con);
}
module_exit(fb_console_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 08:10:52 +0000