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path: root/drivers/tty/serial/pch_uart.c
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Diffstat (limited to 'drivers/tty/serial/pch_uart.c')
-rw-r--r--drivers/tty/serial/pch_uart.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 0aa2b528ef3d..8fa1134e0051 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1508,10 +1508,14 @@ static int pch_uart_verify_port(struct uart_port *port,
__func__);
return -EOPNOTSUPP;
#endif
- dev_info(priv->port.dev, "PCH UART : Use DMA Mode\n");
- if (!priv->use_dma)
+ if (!priv->use_dma) {
pch_request_dma(port);
- priv->use_dma = 1;
+ if (priv->chan_rx)
+ priv->use_dma = 1;
+ }
+ dev_info(priv->port.dev, "PCH UART: %s\n",
+ priv->use_dma ?
+ "Use DMA Mode" : "No DMA");
}
return 0;
@@ -1853,7 +1857,6 @@ static void pch_uart_exit_port(struct eg20t_port *priv)
debugfs_remove(priv->debugfs);
#endif
uart_remove_one_port(&pch_uart_driver, &priv->port);
- pci_set_drvdata(priv->pdev, NULL);
free_page((unsigned long)priv->rxbuf.buf);
}
@@ -1907,7 +1910,7 @@ static int pch_uart_pci_resume(struct pci_dev *pdev)
#define pch_uart_pci_resume NULL
#endif
-static DEFINE_PCI_DEVICE_TABLE(pch_uart_pci_id) = {
+static const struct pci_device_id pch_uart_pci_id[] = {
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8811),
.driver_data = pch_et20t_uart0},
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8812),