Re: drm/ttm/tests: fix lru_count ASSERT

["Knop, Ryszard" <ryszard.knop@intel.com>]

LGTM, verified locally this fixes 2 KUnit errors. A few missing
expected subtests still remain though.

Reviewed-by: Ryszard Knop <ryszard.knop@intel.com>

On Thu, 2026-04-09 at 12:10 +0100, Matthew Auld wrote:
> On pool init we should expect the lru_count for each node to be zeroed
> as per __list_lru_init -> init_one_lru, but here we are asserting the
> opposite.
> 
> Currently our CI is blowing up with:
> 
> 10:23:33] # ttm_device_init_pools: ASSERTION FAILED at drivers/gpu/drm/ttm/tests/ttm_device_test.c:178
> [10:23:33] Expected !list_lru_count(&pt.pages) to be false, but is true
> [10:23:33] [FAILED] DMA allocations, DMA32 required
> [10:23:33] [PASSED] No DMA allocations, DMA32 required
> [10:23:33]     # ttm_device_init_pools: ASSERTION FAILED at drivers/gpu/drm/ttm/tests/ttm_device_test.c:178
> [10:23:33]     Expected !list_lru_count(&pt.pages) to be false, but is true
> 
> Fixes: 444e2a19d7fd ("ttm/pool: port to list_lru. (v2)")
> Signed-off-by: Matthew Auld <matthew.auld@intel.com>
> Cc: Matthew Brost <matthew.brost@intel.com>
> Cc: Christian Koenig <christian.koenig@amd.com>
> Cc: Dave Airlie <airlied@redhat.com>
> ---
>  drivers/gpu/drm/ttm/tests/ttm_device_test.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/ttm/tests/ttm_device_test.c b/drivers/gpu/drm/ttm/tests/ttm_device_test.c
> index db4b4a09a73f..8bcac84e9846 100644
> --- a/drivers/gpu/drm/ttm/tests/ttm_device_test.c
> +++ b/drivers/gpu/drm/ttm/tests/ttm_device_test.c
> @@ -176,7 +176,7 @@ static void ttm_device_init_pools(struct kunit *test)
>  
>  				if (ttm_pool_uses_dma_alloc(pool))
>  					KUNIT_ASSERT_FALSE(test,
> -							   !list_lru_count(&pt.pages));
> +							   list_lru_count(&pt.pages));
>  			}
>  		}
>  	}