diff options
| author | David S. Miller <davem@davemloft.net> | 2009-03-28 03:19:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-28 03:19:16 +0300 |
| commit | a83398570e17af6bb81eb94f4f5dd356bd2828d8 (patch) | |
| tree | 5b5c7c3a56898485479291b7c964a1f3887d469c /drivers/usb/serial/usb-serial.c | |
| parent | f9384d41c02408dd404aa64d66d0ef38adcf6479 (diff) | |
| parent | 0b4d569de222452bcb55a4a536ade6cf4d8d1e30 (diff) | |
| download | linux-a83398570e17af6bb81eb94f4f5dd356bd2828d8.tar.xz | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index cfcfd5ab06ce..742a5bc44be8 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -204,6 +204,11 @@ static int serial_open (struct tty_struct *tty, struct file *filp) goto bailout_kref_put; } + if (port->serial->disconnected) { + retval = -ENODEV; + goto bailout_kref_put; + } + if (mutex_lock_interruptible(&port->mutex)) { retval = -ERESTARTSYS; goto bailout_kref_put; @@ -1067,6 +1072,8 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message) struct usb_serial_port *port; int i, r = 0; + serial->suspending = 1; + for (i = 0; i < serial->num_ports; ++i) { port = serial->port[i]; if (port) @@ -1083,10 +1090,15 @@ EXPORT_SYMBOL(usb_serial_suspend); int usb_serial_resume(struct usb_interface *intf) { struct usb_serial *serial = usb_get_intfdata(intf); + int rv; + serial->suspending = 0; if (serial->type->resume) - return serial->type->resume(serial); - return 0; + rv = serial->type->resume(serial); + else + rv = usb_serial_generic_resume(serial); + + return rv; } EXPORT_SYMBOL(usb_serial_resume); @@ -1222,7 +1234,6 @@ static void fixup_generic(struct usb_serial_driver *device) set_to_generic_if_null(device, read_bulk_callback); set_to_generic_if_null(device, write_bulk_callback); set_to_generic_if_null(device, shutdown); - set_to_generic_if_null(device, resume); } int usb_serial_register(struct usb_serial_driver *driver) @@ -1230,6 +1241,9 @@ int usb_serial_register(struct usb_serial_driver *driver) /* must be called with BKL held */ int retval; + if (usb_disabled()) + return -ENODEV; + fixup_generic(driver); if (!driver->description) |