Revert "dmaengine: imx-sdma: Use GFP_NOWAIT for dma allocations"

This reverts commit c1199875, as this depends on another commit
that is going to be reverted.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/imx-sdma.c

@@ -1194,8 +1194,8 @@ static int sdma_alloc_bd(struct sdma_desc *desc)
 {
 	int ret = 0;
 
-	desc->bd = dma_pool_alloc(desc->sdmac->bd_pool, GFP_NOWAIT,
-				  &desc->bd_phys);
+	desc->bd = dma_pool_alloc(desc->sdmac->bd_pool, GFP_ATOMIC,
+					&desc->bd_phys);
 	if (!desc->bd) {
 		ret = -ENOMEM;
 		goto out;