From 60a9244a5d14218cbdd2030e140e3c693d0c030d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 17 Aug 2016 19:20:29 +0300 Subject: [PATCH] serial: 8250_lpss: enable MSI for Intel Quark Intel Quark SoC supports MSI for LPSS, in particular for UART. Enable MSI for Intel Quark. Signed-off-by: Andy Shevchenko Tested-by: Bryan O'Donoghue Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_lpss.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c index f3cf4e8a5086..c0db2a85c1f5 100644 --- a/drivers/tty/serial/8250/8250_lpss.c +++ b/drivers/tty/serial/8250/8250_lpss.c @@ -151,6 +151,20 @@ static int byt_serial_setup(struct lpss8250 *lpss, struct uart_port *port) return 0; } +static int qrk_serial_setup(struct lpss8250 *lpss, struct uart_port *port) +{ + struct pci_dev *pdev = to_pci_dev(port->dev); + int ret; + + ret = pci_alloc_irq_vectors(pdev, 1, 1, 0); + if (ret < 0) + return ret; + + port->irq = pci_irq_vector(pdev, 0); + + return 0; +} + static bool lpss8250_dma_filter(struct dma_chan *chan, void *param) { struct dw_dma_slave *dws = param; @@ -261,6 +275,7 @@ static const struct lpss8250_board byt_board = { static const struct lpss8250_board qrk_board = { .freq = 44236800, .base_baud = 2764800, + .setup = qrk_serial_setup, }; #define LPSS_DEVICE(id, board) { PCI_VDEVICE(INTEL, id), (kernel_ulong_t)&board } -- 2.20.1