drm/nouveau: create function for "dealing" with gpu lockup

It's mostly a cleanup, but in nv50_fbcon_accel_init gpu lockup
message was printed, but HWACCEL_DISBALED flag was not set.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv04_fbcon.c b/drivers/gpu/drm/nouveau/nv04_fbcon.c
index bd08a0d..d910873 100644
--- a/drivers/gpu/drm/nouveau/nv04_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nv04_fbcon.c
@@ -39,8 +39,7 @@
 		return;
 
 	if (!(info->flags & FBINFO_HWACCEL_DISABLED) && RING_SPACE(chan, 4)) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 	}
 
 	if (info->flags & FBINFO_HWACCEL_DISABLED) {
@@ -67,8 +66,7 @@
 		return;
 
 	if (!(info->flags & FBINFO_HWACCEL_DISABLED) && RING_SPACE(chan, 7)) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 	}
 
 	if (info->flags & FBINFO_HWACCEL_DISABLED) {
@@ -112,8 +110,7 @@
 	}
 
 	if (!(info->flags & FBINFO_HWACCEL_DISABLED) && RING_SPACE(chan, 8)) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 	}
 
 	if (info->flags & FBINFO_HWACCEL_DISABLED) {
@@ -147,8 +144,7 @@
 		int iter_len = dsize > 128 ? 128 : dsize;
 
 		if (RING_SPACE(chan, iter_len + 1)) {
-			NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-			info->flags |= FBINFO_HWACCEL_DISABLED;
+			nouveau_fbcon_gpu_lockup(info);
 			cfb_imageblit(info, image);
 			return;
 		}
@@ -246,8 +242,7 @@
 		return ret;
 
 	if (RING_SPACE(chan, 49)) {
-		NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
-		info->flags |= FBINFO_HWACCEL_DISABLED;
+		nouveau_fbcon_gpu_lockup(info);
 		return 0;
 	}