From: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Date: Mon, 23 Jul 2007 08:32:01 +0000 (+1000)
Subject: drm/via: Fix dmablit when blit queue is full
X-Git-Tag: v2.6.23-rc4~14^2~1
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=22c806c23fe17f9c744d19edfe650cfd6496bc2a;p=linux-2.6

drm/via: Fix dmablit when blit queue is full

fd.o bug 11542

Acked-by: Thomas Hellstrom
Signed-off-by: Dave Airlie <airlied@linux.ie>
---

diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index 832de1d9ba..3dd1ed3d1b 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -560,7 +560,7 @@ via_init_dmablit(struct drm_device *dev)
 		blitq->head = 0;
 		blitq->cur = 0;
 		blitq->serviced = 0;
-		blitq->num_free = VIA_NUM_BLIT_SLOTS;
+		blitq->num_free = VIA_NUM_BLIT_SLOTS - 1;
 		blitq->num_outstanding = 0;
 		blitq->is_active = 0;
 		blitq->aborting = 0;