tree: git://people.freedesktop.org/~airlied/linux.git drm-syncobj
head: 58ec426a9ee099705987657cfad202b5bd96e363
commit: d9029ccba2bd5d542d384335f3d6e761bd1b3bee [5/8] sync_file: add support
for a semaphore object (v2)
reproduce:
# apt-get install sparse
git checkout d9029ccba2bd5d542d384335f3d6e761bd1b3bee
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
include/linux/compiler.h:264:8: sparse: attribute 'no_sanitize_address':
unknown attribute
include/linux/dma-fence.h:248:25: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:266:30: sparse: incompatible types in comparison
expression (different address spaces)
>> drivers/dma-buf/sync_file.c:236:19: sparse: incompatible types in comparison
>> expression (different address spaces)
include/linux/dma-fence.h:248:25: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:266:30: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:248:25: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:266:30: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:248:25: sparse: incompatible types in comparison
expression (different address spaces)
include/linux/dma-fence.h:266:30: sparse: incompatible types in comparison
expression (different address spaces)
vim +236 drivers/dma-buf/sync_file.c
220 /**
221 * sync_file_replace_fence - replace the fence related to the sync_file
222 * @sync_file: sync file to replace fence in
223 * @fence: fence to replace with (or NULL for no fence).
224 * Returns previous fence.
225 */
226 int sync_file_replace_fence(struct sync_file *sync_file,
227 struct dma_fence *fence,
228 struct dma_fence **old_fence)
229 {
230 struct dma_fence *ret_fence = NULL;
231
232 /* don't allow replace on fence sync files */
233 if (sync_file->type != SYNC_FILE_TYPE_SEMAPHORE)
234 return -EINVAL;
235
> 236 if (fence == sync_file->fence)
237 return -EINVAL;
238
239 if (fence)
240 dma_fence_get(fence);
241
242 mutex_lock(&sync_file->lock);
243
244 ret_fence = sync_file_get_fence_locked(sync_file);
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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