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path: root/drivers/spi/spi-topcliff-pch.c
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Diffstat (limited to 'drivers/spi/spi-topcliff-pch.c')
-rw-r--r--drivers/spi/spi-topcliff-pch.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c
index 2e7f38c7a961..88eb57e858b3 100644
--- a/drivers/spi/spi-topcliff-pch.c
+++ b/drivers/spi/spi-topcliff-pch.c
@@ -915,7 +915,7 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw)
915 /* Set Tx DMA */ 915 /* Set Tx DMA */
916 param = &dma->param_tx; 916 param = &dma->param_tx;
917 param->dma_dev = &dma_dev->dev; 917 param->dma_dev = &dma_dev->dev;
918 param->chan_id = data->master->bus_num * 2; /* Tx = 0, 2 */ 918 param->chan_id = data->ch * 2; /* Tx = 0, 2 */;
919 param->tx_reg = data->io_base_addr + PCH_SPDWR; 919 param->tx_reg = data->io_base_addr + PCH_SPDWR;
920 param->width = width; 920 param->width = width;
921 chan = dma_request_channel(mask, pch_spi_filter, param); 921 chan = dma_request_channel(mask, pch_spi_filter, param);
@@ -930,7 +930,7 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw)
930 /* Set Rx DMA */ 930 /* Set Rx DMA */
931 param = &dma->param_rx; 931 param = &dma->param_rx;
932 param->dma_dev = &dma_dev->dev; 932 param->dma_dev = &dma_dev->dev;
933 param->chan_id = data->master->bus_num * 2 + 1; /* Rx = Tx + 1 */ 933 param->chan_id = data->ch * 2 + 1; /* Rx = Tx + 1 */;
934 param->rx_reg = data->io_base_addr + PCH_SPDRR; 934 param->rx_reg = data->io_base_addr + PCH_SPDRR;
935 param->width = width; 935 param->width = width;
936 chan = dma_request_channel(mask, pch_spi_filter, param); 936 chan = dma_request_channel(mask, pch_spi_filter, param);
@@ -1452,6 +1452,11 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev)
1452 1452
1453 pch_spi_set_master_mode(master); 1453 pch_spi_set_master_mode(master);
1454 1454
1455 if (use_dma) {
1456 dev_info(&plat_dev->dev, "Use DMA for data transfers\n");
1457 pch_alloc_dma_buf(board_dat, data);
1458 }
1459
1455 ret = spi_register_master(master); 1460 ret = spi_register_master(master);
1456 if (ret != 0) { 1461 if (ret != 0) {
1457 dev_err(&plat_dev->dev, 1462 dev_err(&plat_dev->dev,
@@ -1459,14 +1464,10 @@ static int pch_spi_pd_probe(struct platform_device *plat_dev)
1459 goto err_spi_register_master; 1464 goto err_spi_register_master;
1460 } 1465 }
1461 1466
1462 if (use_dma) {
1463 dev_info(&plat_dev->dev, "Use DMA for data transfers\n");
1464 pch_alloc_dma_buf(board_dat, data);
1465 }
1466
1467 return 0; 1467 return 0;
1468 1468
1469err_spi_register_master: 1469err_spi_register_master:
1470 pch_free_dma_buf(board_dat, data);
1470 free_irq(board_dat->pdev->irq, data); 1471 free_irq(board_dat->pdev->irq, data);
1471err_request_irq: 1472err_request_irq:
1472 pch_spi_free_resources(board_dat, data); 1473 pch_spi_free_resources(board_dat, data);