[PATCH v2 06/19] cdx: Propagate DMA configuration errors

[Leon Romanovsky]

From: Leon Romanovsky <leonro@xxxxxxxxxx>

CDX reports successful DMA configuration when firmware setup defers or
default-domain acquisition fails. Driver probing can then proceed without
the required DMA setup or IOMMU ownership.

Return the configuration result so driver core stops or defers probing
instead of allowing a driver to use a rejected domain.

Fixes: 2959ab247061 ("cdx: add the cdx bus driver")
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
 drivers/cdx/cdx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c
index a118a89a7779d..0a030bf522690 100644
--- a/drivers/cdx/cdx.c
+++ b/drivers/cdx/cdx.c
@@ -367,7 +367,7 @@ static int cdx_dma_configure(struct device *dev)
 			arch_teardown_dma_ops(dev);
 	}
 
-	return 0;
+	return ret;
 }
 
 static void cdx_dma_cleanup(struct device *dev)

-- 
2.56.0