diff options
| author |   Jan Kiszka <jan.kiszka@siemens.com> | 2017-02-08 17:09:04 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-10 15:12:38 +0100 |
| commit | 5b5f252d67afd7bd5b923c664206d60800bf5054 (patch) | |
| tree | 891e8c8161974a0f6a57ea46b151624fc5277b6a /drivers/tty | |
| parent | serial: exar: Fix mapping of port I/O resources (diff) | |
| download | linux-dev-5b5f252d67afd7bd5b923c664206d60800bf5054.tar.xz linux-dev-5b5f252d67afd7bd5b923c664206d60800bf5054.zip | |
serial: exar: Fix initialization of EXAR registers for ports > 0
So far, pci_xr17v35x_setup always initialized 8XMODE, FCTR & Co. for
port 0 because it used the address of that port instead of moving the
pointer according to the port number. Fix this and remove the unneeded
temporary ioremap by moving default_setup up and reusing the membase it
fills into the port structure.
Fixes: 14faa8cce88e ("tty/8250 Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards")
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.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 58469d9d6515..f489f25643c5 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -157,27 +157,23 @@ pci_xr17v35x_setup(struct exar8250 *priv, struct pci_dev *pcidev, if (board->has_slave && idx >= 8) port->port.uartclk /= 2; - p = pci_ioremap_bar(pcidev, 0); - if (!p) - return -ENOMEM; + ret = default_setup(priv, pcidev, idx, offset, port); + if (ret) + return ret; - /* Setup Multipurpose Input/Output pins. */ - if (idx == 0) - setup_gpio(p); + p = port->port.membase; writeb(0x00, p + UART_EXAR_8XMODE); writeb(UART_FCTR_EXAR_TRGD, p + UART_EXAR_FCTR); writeb(128, p + UART_EXAR_TXTRG); writeb(128, p + UART_EXAR_RXTRG); - iounmap(p); - ret = default_setup(priv, pcidev, idx, offset, port); - if (ret) - return ret; + if (idx == 0) { + /* Setup Multipurpose Input/Output pins. */ + setup_gpio(p); - if (idx == 0) - port->port.private_data = - xr17v35x_register_gpio(pcidev); + port->port.private_data = xr17v35x_register_gpio(pcidev); + } return 0; } |