drm/ttm: fix condition (and vs or)

The "if (!p && !p->dev)" condition isn't right because || was intended
instead of &&.  But actually, "p" is the list cursor and so it's always
non-NULL and we can just remove that bit.  We can remove the another
similar check as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
index 156ddcd..37ead69 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
@@ -933,10 +933,8 @@ static int ttm_dma_pool_get_num_unused_pages(void)
        unsigned total = 0;
 
        mutex_lock(&_manager->lock);
-       list_for_each_entry(p, &_manager->pools, pools) {
-               if (p)
-                       total += p->pool->npages_free;
-       }
+       list_for_each_entry(p, &_manager->pools, pools)
+               total += p->pool->npages_free;
        mutex_unlock(&_manager->lock);
        return total;
 }
@@ -1031,7 +1029,7 @@ static int ttm_dma_pool_mm_shrink(struct shrinker *shrink,
        list_for_each_entry(p, &_manager->pools, pools) {
                unsigned nr_free;
 
-               if (!p && !p->dev)
+               if (!p->dev)
                        continue;
                if (shrink_pages == 0)
                        break;