[PATCH] vt: Decrement ref count of the VT backend on deallocation

When a VT is newly allocated, the module reference count of the backend
will be incremented.  This should be balanced by a module_put() when this
VT is deallocated.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 3ef823d..da7e66a 100644 (file)
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -886,6 +886,7 @@ void vc_disallocate(unsigned int currcons)
        if (vc_cons_allocated(currcons)) {
                struct vc_data *vc = vc_cons[currcons].d;
                vc->vc_sw->con_deinit(vc);
+               module_put(vc->vc_sw->owner);
                if (vc->vc_kmalloced)
                        kfree(vc->vc_screenbuf);
                if (currcons >= MIN_NR_CONSOLES)