Merge remote-tracking branch 'spi/fix/core' into spi-linus

drivers/spi/spi.c

@@ -619,6 +619,8 @@ static int spi_map_buf(struct spi_master *master, struct device *dev,
 	}
 
 	ret = dma_map_sg(dev, sgt->sgl, sgt->nents, dir);
+	if (!ret)
+		ret = -ENOMEM;
 	if (ret < 0) {
 		sg_free_table(sgt);
 		return ret;
@@ -647,8 +649,8 @@ static int __spi_map_msg(struct spi_master *master, struct spi_message *msg)
 	if (!master->can_dma)
 		return 0;
 
-	tx_dev = &master->dma_tx->dev->device;
-	rx_dev = &master->dma_rx->dev->device;
+	tx_dev = master->dma_tx->device->dev;
+	rx_dev = master->dma_rx->device->dev;
 
 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
 		if (!master->can_dma(master, msg->spi, xfer))
@@ -687,8 +689,8 @@ static int spi_unmap_msg(struct spi_master *master, struct spi_message *msg)
 	if (!master->cur_msg_mapped || !master->can_dma)
 		return 0;
 
-	tx_dev = &master->dma_tx->dev->device;
-	rx_dev = &master->dma_rx->dev->device;
+	tx_dev = master->dma_tx->device->dev;
+	rx_dev = master->dma_rx->device->dev;
 
 	list_for_each_entry(xfer, &msg->transfers, transfer_list) {
 		if (!master->can_dma(master, msg->spi, xfer))