From 24572af4fb6ce0726dbe12b0286de11d25ff008b Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Wed, 8 Feb 2017 17:09:03 +0100 Subject: [PATCH] serial: exar: Fix mapping of port I/O resources pcim_iomap_table only returns the table of mapping, it does not perform them. For that, we need to call pcim_iomap, but only if that mapping was not done before. Fixes: d0aeaa83f0b0 ("serial: exar: split out the exar code from 8250_pci") Signed-off-by: Jan Kiszka Reviewed-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_exar.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index e6b44a75a5e0..58469d9d6515 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -72,6 +72,9 @@ static int default_setup(struct exar8250 *priv, struct pci_dev *pcidev, const struct exar8250_board *board = priv->board; unsigned int bar = 0; + if (!pcim_iomap_table(pcidev)[bar] && !pcim_iomap(pcidev, bar, 0)) + return -ENOMEM; + port->port.iotype = UPIO_MEM; port->port.mapbase = pci_resource_start(pcidev, bar) + offset; port->port.membase = pcim_iomap_table(pcidev)[bar] + offset; -- 2.20.1