dmaengine: Revert "drivers/dma: remove unused support for MEMSET operations"

This reverts commit 48a9db462d99494583dad829969616ac90a8df4e.

Some platforms actually need support for the memset operations. Bring it back.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index a4c860dabf91..c0793818bb99 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -832,6 +832,8 @@ int dma_async_device_register(struct dma_device *device)
                 !device->device_prep_dma_pq);
         BUG_ON(dma_has_cap(DMA_PQ_VAL, device->cap_mask) &&
                 !device->device_prep_dma_pq_val);
+        BUG_ON(dma_has_cap(DMA_MEMSET, device->cap_mask) &&
+                !device->device_prep_dma_memset);
         BUG_ON(dma_has_cap(DMA_INTERRUPT, device->cap_mask) &&
                 !device->device_prep_dma_interrupt);
         BUG_ON(dma_has_cap(DMA_SG, device->cap_mask) &&