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| author | Johan Hovold <jhovold@gmail.com> | 2013-05-08 17:51:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-17 02:32:21 +0200 |
| commit | dcf0105039660e951dfea348d317043d17988dfc (patch) | |
| tree | 17b7748bf83e08da5da530a257a81cc044110e91 /drivers/usb/serial/usb-serial.c | |
| parent | USB: serial: add wait_until_sent operation (diff) | |
| download | linux-dcf0105039660e951dfea348d317043d17988dfc.tar.xz linux-dcf0105039660e951dfea348d317043d17988dfc.zip | |
USB: serial: add generic wait_until_sent implementation
Add generic wait_until_sent implementation which polls for empty
hardware buffers using the new port-operation tx_empty.
The generic implementation will be used for all sub-drivers that
implement tx_empty but does not define wait_until_sent.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 31d27686151f..60caf9cb99f4 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1333,6 +1333,8 @@ static void usb_serial_operations_init(struct usb_serial_driver *device) set_to_generic_if_null(device, close); set_to_generic_if_null(device, write_room); set_to_generic_if_null(device, chars_in_buffer); + if (device->tx_empty) + set_to_generic_if_null(device, wait_until_sent); set_to_generic_if_null(device, read_bulk_callback); set_to_generic_if_null(device, write_bulk_callback); set_to_generic_if_null(device, process_read_urb); |