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i915: lock struct mutex about buffer object lookups

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Dave Airlie 2007-10-17 15:36:14 +10:00
parent db1709f2f3
commit ec1162b212
1 changed files with 6 additions and 0 deletions
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6
shared-core/i915_dma.c
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@ -805,7 +805,9 @@ int i915_process_relocs(struct drm_file *file_priv,
memset(&reloc_kmap, 0, sizeof(reloc_kmap));
mutex_lock(&dev->struct_mutex);
reloc_list_object = drm_lookup_buffer_object(file_priv, cur_handle, 1);
mutex_unlock(&dev->struct_mutex);
if (!reloc_list_object)
return -EINVAL;
@ -905,7 +907,9 @@ int i915_validate_buffer_list(struct drm_file *file_priv,
if (arg.handled) {
data = arg.next;
mutex_lock(&dev->struct_mutex);
buffers[buf_count] = drm_lookup_buffer_object(file_priv, req->arg_handle, 1);
mutex_unlock(&dev->struct_mutex);
buf_count++;
continue;
}
@ -948,7 +952,9 @@ int i915_validate_buffer_list(struct drm_file *file_priv,
if (buf_reloc_handle) {
memset(&relocatee, 0, sizeof(relocatee));
mutex_lock(&dev->struct_mutex);
relocatee.buf = drm_lookup_buffer_object(file_priv, buf_handle, 1);
mutex_unlock(&dev->struct_mutex);
if (!relocatee.buf) {
DRM_DEBUG("relocatee buffer invalid %08x\n", buf_handle);
ret = -EINVAL;