diff options
| author | Elina Pasheva <epasheva@sierrawireless.com> | 2009-05-12 13:12:24 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-06-15 21:44:45 -0700 |
| commit | 238ebd138c9704e1162030c1e600bc06142cb2c8 (patch) | |
| tree | 9e069a3e31e6471e9d62ee7938aa39a4daa300fd | |
| parent | 72fda3ca6fc14662bb385d1e39e9e00af15b200d (diff) | |
USB: serial: sierra driver zero length packet fix
- Fixed a problem with transferring packets with size a multiple of Bulk
Xfer size in function sierra_write(). Added transfer flag
URB_ZERO_PACKET before submitting the urb to trigger Zero-length data
transfer when packet size is a multiple of Bulk Xfer.
Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/serial/sierra.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index f494c5f659e..9d11fe47633 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -17,7 +17,7 @@ Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> */ -#define DRIVER_VERSION "v.1.3.6" +#define DRIVER_VERSION "v.1.3.7" #define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" @@ -474,6 +474,9 @@ static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, port->bulk_out_endpointAddress), buffer, writesize, sierra_outdat_callback, port); + /* Handle the need to send a zero length packet */ + urb->transfer_flags |= URB_ZERO_PACKET; + /* send it down the pipe */ retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) { |