From: Chris Wilson Date: Fri, 21 Jan 2011 10:07:18 +0000 (+0000) Subject: drm/i915: Fix use of invalid array size for ring->sync_seqno X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=076e2c0eb83f1a0e2e7d0ae1e4d4c0f7b13f1f64;p=linux-beck.git drm/i915: Fix use of invalid array size for ring->sync_seqno There are I915_NUM_RINGS-1 inter-ring synchronisation counters, but we were clearing I915_NUM_RINGS of them. Oops. Reported-by: Jiri Slaby Tested-by: Jiri Slaby Signed-off-by: Chris Wilson --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 3dfc848ff755..812b97b47469 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1857,7 +1857,7 @@ i915_gem_retire_requests_ring(struct drm_device *dev, seqno = ring->get_seqno(ring); - for (i = 0; i < I915_NUM_RINGS; i++) + for (i = 0; i < ARRAY_SIZE(ring->sync_seqno); i++) if (seqno >= ring->sync_seqno[i]) ring->sync_seqno[i] = 0; diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index dcfdf4151b6d..d2f445e825f2 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -1175,7 +1175,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, goto err; seqno = i915_gem_next_request_seqno(dev, ring); - for (i = 0; i < I915_NUM_RINGS-1; i++) { + for (i = 0; i < ARRAY_SIZE(ring->sync_seqno); i++) { if (seqno < ring->sync_seqno[i]) { /* The GPU can not handle its semaphore value wrapping, * so every billion or so execbuffers, we need to stall