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USB: remove references to port->port.count from the serial drivers

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This patch (as1344) removes references to port->port.count from the
USB serial drivers.  Now that serial ports are properly reference
counted, port.count checking is unnecessary and incorrect.  Drivers
should assume that the port is in use from the time the open method
runs until the close method is called.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2010-02-17 10:05:47 -05:00
committed by Greg Kroah-Hartman
parent a108bfcb37
commit 1f87158e44
11 changed files with 65 additions and 125 deletions
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3
drivers/usb/serial/generic.c
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@@ -20,6 +20,7 @@
#include <linux/usb/serial.h>
#include <linux/uaccess.h>
#include <linux/kfifo.h>
#include <linux/serial.h>
static int debug;
@@ -585,7 +586,7 @@ int usb_serial_generic_resume(struct usb_serial *serial)
for (i = 0; i < serial->num_ports; i++) {
port = serial->port[i];
if (!port->port.count)
if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags))
continue;
if (port->read_urb) {