diff options
| -rw-r--r-- | drivers/spi/spi-topcliff-pch.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 8e1cc345810a..dfaa1d79a78b 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -103,6 +103,7 @@ static int use_dma = 1; struct pch_spi_dma_ctrl { + struct pci_dev *dma_dev; struct dma_async_tx_descriptor *desc_tx; struct dma_async_tx_descriptor *desc_rx; struct pch_dma_slave param_tx; @@ -876,7 +877,6 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw) if (!chan) { dev_err(&data->master->dev, "ERROR: dma_request_channel FAILS(Tx)\n"); - data->use_dma = 0; goto out; } dma->chan_tx = chan; @@ -893,13 +893,15 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw) "ERROR: dma_request_channel FAILS(Rx)\n"); dma_release_channel(dma->chan_tx); dma->chan_tx = NULL; - data->use_dma = 0; goto out; } dma->chan_rx = chan; + dma->dma_dev = dma_dev; + return; out: pci_dev_put(dma_dev); + data->use_dma = 0; } static void pch_spi_release_dma(struct pch_spi_data *data) @@ -915,6 +917,8 @@ static void pch_spi_release_dma(struct pch_spi_data *data) dma_release_channel(dma->chan_rx); dma->chan_rx = NULL; } + + pci_dev_put(dma->dma_dev); } static void pch_spi_handle_dma(struct pch_spi_data *data, int *bpw) |