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authorJan Kiszka <jan.kiszka@siemens.com>2017-02-08 17:09:03 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-10 15:12:38 +0100
commit24572af4fb6ce0726dbe12b0286de11d25ff008b (patch)
treecba34e0bcf18123a8f0f33a80da2b9c9a16c259c /drivers/tty
parent90afa5255f5c5ae67c869918e4c5f60b8580db70 (diff)
downloadlinux-24572af4fb6ce0726dbe12b0286de11d25ff008b.tar.bz2
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 <jan.kiszka@siemens.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_exar.c3
1 files changed, 3 insertions, 0 deletions
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;