diff options
| author | Elina Pasheva <epasheva@sierrawireless.com> | 2009-05-12 13:12:24 -0700 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2009-05-21 10:08:22 +1000 |
| commit | bcd961117a1119bcbd0143eb09083b56407c6007 (patch) | |
| tree | 3debf156b9f3fa880402419e55b28a96f8a5f89b /drivers/usb | |
| parent | ddbccdbc6a41a2a147e895ce6162886e9918d572 (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>
Diffstat (limited to 'drivers/usb')
| -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 acae3f6a191a..1c276e0ea54f 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" @@ -428,6 +428,9 @@ 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) { |