diff options
| author | Xiongwei Song <sxwjean@gmail.com> | 2017-12-29 20:37:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-08 16:37:18 +0100 |
| commit | 47ac54e877c386653070c7a6f57aa12a45ce80e1 (patch) | |
| tree | a63246cfaf49464d1719ff1964b2f4e05af4bdf6 /drivers/staging/android | |
| parent | a941f70e55471367de8e9c3cc44b47303ba1a87d (diff) | |
staging: android: check for error from register_shrinker in ion_heap_init_shrinker
The function register_shrinker in ion_heap_init_shrinker may return an
error, check it out. Meanwhile, ion_heap_init_shrinker has to a return
value.
Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android')
| -rw-r--r-- | drivers/staging/android/ion/ion.c | 8 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion.h | 2 | ||||
| -rw-r--r-- | drivers/staging/android/ion/ion_heap.c | 5 |
3 files changed, 10 insertions, 5 deletions
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index bb2c4b07badd..57e0d8035b2e 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -529,6 +529,7 @@ void ion_device_add_heap(struct ion_heap *heap) { struct dentry *debug_file; struct ion_device *dev = internal_dev; + int ret; if (!heap->ops->allocate || !heap->ops->free) pr_err("%s: can not add heap with invalid ops struct.\n", @@ -540,8 +541,11 @@ void ion_device_add_heap(struct ion_heap *heap) if (heap->flags & ION_HEAP_FLAG_DEFER_FREE) ion_heap_init_deferred_free(heap); - if ((heap->flags & ION_HEAP_FLAG_DEFER_FREE) || heap->ops->shrink) - ion_heap_init_shrinker(heap); + if ((heap->flags & ION_HEAP_FLAG_DEFER_FREE) || heap->ops->shrink) { + ret = ion_heap_init_shrinker(heap); + if (ret) + pr_err("%s: Failed to register shrinker\n", __func__); + } heap->dev = dev; down_write(&dev->lock); diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h index c24c6e230654..a238f23c9116 100644 --- a/drivers/staging/android/ion/ion.h +++ b/drivers/staging/android/ion/ion.h @@ -230,7 +230,7 @@ int ion_alloc(size_t len, * this function will be called to setup a shrinker to shrink the freelists * and call the heap's shrink op. */ -void ion_heap_init_shrinker(struct ion_heap *heap); +int ion_heap_init_shrinker(struct ion_heap *heap); /** * ion_heap_init_deferred_free -- initialize deferred free functionality diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c index 2af86a2d94fb..772dad65396e 100644 --- a/drivers/staging/android/ion/ion_heap.c +++ b/drivers/staging/android/ion/ion_heap.c @@ -297,11 +297,12 @@ static unsigned long ion_heap_shrink_scan(struct shrinker *shrinker, return freed; } -void ion_heap_init_shrinker(struct ion_heap *heap) +int ion_heap_init_shrinker(struct ion_heap *heap) { heap->shrinker.count_objects = ion_heap_shrink_count; heap->shrinker.scan_objects = ion_heap_shrink_scan; heap->shrinker.seeks = DEFAULT_SEEKS; heap->shrinker.batch = 0; - register_shrinker(&heap->shrinker); + + return register_shrinker(&heap->shrinker); } |