diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-27 15:13:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-27 15:13:26 -0700 |
| commit | d3b8a1a8496c83bc4a3cc76505c29255af15572c (patch) | |
| tree | b56eb3ef27117bad5c516d6b647bdcd465d7659a /drivers/usb/serial/ir-usb.c | |
| parent | 60564a313a5738960064d6c555ec066d9332f278 (diff) | |
| parent | 0ed0c0c48c508578c30aa58f755ca0d692636906 (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6
Diffstat (limited to 'drivers/usb/serial/ir-usb.c')
| -rw-r--r-- | drivers/usb/serial/ir-usb.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 59f234df5f8..937b2fdd717 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -341,10 +341,14 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int if (count == 0) return 0; - if (port->write_urb->status == -EINPROGRESS) { - dbg ("%s - already writing", __FUNCTION__); + spin_lock(&port->lock); + if (port->write_urb_busy) { + spin_unlock(&port->lock); + dbg("%s - already writing", __FUNCTION__); return 0; } + port->write_urb_busy = 1; + spin_unlock(&port->lock); transfer_buffer = port->write_urb->transfer_buffer; transfer_size = min(count, port->bulk_out_size - 1); @@ -374,9 +378,10 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int port->write_urb->transfer_flags = URB_ZERO_PACKET; result = usb_submit_urb (port->write_urb, GFP_ATOMIC); - if (result) + if (result) { + port->write_urb_busy = 0; dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result); - else + } else result = transfer_size; return result; @@ -387,7 +392,8 @@ static void ir_write_bulk_callback (struct urb *urb, struct pt_regs *regs) struct usb_serial_port *port = (struct usb_serial_port *)urb->context; dbg("%s - port %d", __FUNCTION__, port->number); - + + port->write_urb_busy = 0; if (urb->status) { dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); return; |