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tty/8250 Add XR17D15x devices to the exar_handle_irq override 

Add XR17D15x devices to the exar_handle_irq override: they have the
same extra interrupt register that could fire and never be serviced by
the standard handle_irq.

Signed-off-by: Matt Schulte <matts@commtech-fastcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matt Schulte 2012-11-21 09:40:49 -06:00 committed by Greg Kroah-Hartman
parent 81db0772dc
commit 30fa96a346
1 changed files with 4 additions and 2 deletions
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6
drivers/tty/serial/8250/8250.c
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@ -1578,7 +1578,8 @@ static int exar_handle_irq(struct uart_port *port)
ret = serial8250_handle_irq(port, iir); ret = serial8250_handle_irq(port, iir);
if (port->type == PORT_XR17V35X) { if ((port->type == PORT_XR17V35X) ||
(port->type == PORT_XR17D15X)) {
int0 = serial_port_in(port, 0x80); int0 = serial_port_in(port, 0x80);
int1 = serial_port_in(port, 0x81); int1 = serial_port_in(port, 0x81);
int2 = serial_port_in(port, 0x82); int2 = serial_port_in(port, 0x82);
@ -2689,7 +2690,8 @@ static void serial8250_config_port(struct uart_port *port, int flags)
serial8250_release_std_resource(up); serial8250_release_std_resource(up);
/* Fixme: probably not the best place for this */ /* Fixme: probably not the best place for this */
if (port->type == PORT_XR17V35X) if ((port->type == PORT_XR17V35X) ||
(port->type == PORT_XR17D15X))
port->handle_irq = exar_handle_irq; port->handle_irq = exar_handle_irq;
} }