fbcon: allow fbcon to use the primary display driver
Allow fbcon to select the primary display adapter using the
fb_is_primary_device() arch-specific helper. If a a primary adapter is
detected, fbcon will unbind the old adapter from the VT layer, then rebind
using the new adapter. This requires that bind_/unbind_con_driver() be made
public.
Because this feature may produce unexpected behavior (from the user's POV),
this must be explicitly enabled in Kconfig.
[akpm@linux-foundation.org: export unbind_con_driver]
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>
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 349673d..8a389b3 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2869,8 +2869,7 @@
static struct class *vtconsole_class;
-static int bind_con_driver(const struct consw *csw, int first, int last,
- int deflt)
+int bind_con_driver(const struct consw *csw, int first, int last, int deflt)
{
struct module *owner = csw->owner;
const char *desc = NULL;
@@ -2969,6 +2968,7 @@
module_put(owner);
return retval;
};
+EXPORT_SYMBOL(bind_con_driver);
#ifdef CONFIG_VT_HW_CONSOLE_BINDING
static int con_is_graphics(const struct consw *csw, int first, int last)
@@ -2987,8 +2987,7 @@
return retval;
}
-static int unbind_con_driver(const struct consw *csw, int first, int last,
- int deflt)
+int unbind_con_driver(const struct consw *csw, int first, int last, int deflt)
{
struct module *owner = csw->owner;
const struct consw *defcsw = NULL;
@@ -3073,6 +3072,7 @@
return retval;
}
+EXPORT_SYMBOL(unbind_con_driver);
static int vt_bind(struct con_driver *con)
{