diff options
| author | Keith Packard <keithp@keithp.com> | 2007-12-06 15:12:21 -0800 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2007-12-11 20:23:00 -0800 |
| commit | 4ec8f58d042d7fe0dab570fed35a438759645ca8 (patch) | |
| tree | 4a58beef2da86945fda8c682245117cff89ea610 | |
| parent | 9ee511d786b1a87944f043c1a16057e8dfc48668 (diff) | |
i915: wait for buffer idle before writing relocations
When writing a relocation entry, make sure the target buffer is idle,
otherwise the GPU may see inconsistent data.
| -rw-r--r-- | shared-core/i915_dma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c index 090ac80a..18d2482e 100644 --- a/shared-core/i915_dma.c +++ b/shared-core/i915_dma.c @@ -751,6 +751,13 @@ int i915_apply_reloc(struct drm_file *file_priv, int num_buffers, !drm_bo_same_page(relocatee->offset, new_cmd_offset)) { drm_bo_kunmap(&relocatee->kmap); relocatee->offset = new_cmd_offset; + mutex_lock (&relocatee->buf->mutex); + ret = drm_bo_wait (relocatee->buf, 0, 0, FALSE); + mutex_unlock (&relocatee->buf->mutex); + if (ret) { + DRM_ERROR("Could not wait for buffer to apply relocs\n %08lx", new_cmd_offset); + return ret; + } ret = drm_bo_kmap(relocatee->buf, new_cmd_offset >> PAGE_SHIFT, 1, &relocatee->kmap); if (ret) { |