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drm: Don't "taskqueue" vt-switch if under DDB/panic situation

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If DDB is active, we can't use a taskqueue thread to switch away from
the X window, because this thread can't run.

Reviewed by:	ray@
Approved by:	ray@
MFC after:	1 week
This commit is contained in:
dumbbell 2014-08-27 10:07:08 +00:00
parent afc6b94804
commit c340b1c78e
1 changed files with 7 additions and 1 deletions
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8
sys/dev/drm2/drm_fb_helper.c
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@ -36,6 +36,8 @@ __FBSDID("$FreeBSD$");
#include <dev/drm2/drm_fb_helper.h>
#include <dev/drm2/drm_crtc_helper.h>
#include <sys/kdb.h>
struct vt_kms_softc {
struct drm_fb_helper *fb_helper;
struct task fb_mode_task;
@ -64,7 +66,11 @@ vt_kms_postswitch(void *arg)
struct vt_kms_softc *sc;
sc = (struct vt_kms_softc *)arg;
taskqueue_enqueue_fast(taskqueue_thread, &sc->fb_mode_task);
if (!kdb_active && panicstr == NULL)
taskqueue_enqueue_fast(taskqueue_thread, &sc->fb_mode_task);
else
drm_fb_helper_restore_fbdev_mode(sc->fb_helper);
return (0);
}