[PATCH v2] drm/ttm: check the return value of kzalloc

In the function ttm_page_alloc_init, kzalloc call is made for variable _manager, we need to check its return value, it may return NULL.

Signed-off-by: Xiongwei Song sxwjean@gmail.com --- v1->v2: delete kfree _manager --- drivers/gpu/drm/ttm/ttm_page_alloc.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index b5ba6441489f..583d73edb7df 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -1007,6 +1007,10 @@ int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages) pr_info("Initializing pool allocator\n");

_manager = kzalloc(sizeof(*_manager), GFP_KERNEL); + if (!_manager) { + ret = -ENOMEM; + goto out; + }

ttm_page_pool_init_locked(&_manager->wc_pool, GFP_HIGHUSER, "wc", 0);

@@ -1041,6 +1045,8 @@ int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages) ttm_pool_mm_shrink_init(_manager);

return 0; +out: + return ret; }

void ttm_page_alloc_fini(void)