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| author | Alan Cox <alan@linux.intel.com> | 2010-02-18 16:44:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:55:12 -0800 |
| commit | a108bfcb372d8c4452701039308fb95747911c59 (patch) | |
| tree | 3528621937692e28081f71131cddc3130e2641ad /drivers/usb/serial/ir-usb.c | |
| parent | 2832fc11f1360668482beec06dbcd631ae5f0cf1 (diff) | |
| download | op-kernel-dev-a108bfcb372d8c4452701039308fb95747911c59.zip op-kernel-dev-a108bfcb372d8c4452701039308fb95747911c59.tar.gz | |
USB: tty: Prune uses of tty_request_room in the USB layer
We have lots of callers that do not need to do this in the first place.
Remove the calls as they both cost CPU and for big buffers can mess up the
multi-page allocation avoidance.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/ir-usb.c')
| -rw-r--r-- | drivers/usb/serial/ir-usb.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index fc2ab81..c3e5d50 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -462,10 +462,8 @@ static void ir_read_bulk_callback(struct urb *urb) usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); tty = tty_port_tty_get(&port->port); - if (tty_buffer_request_room(tty, urb->actual_length - 1)) { - tty_insert_flip_string(tty, data+1, urb->actual_length - 1); - tty_flip_buffer_push(tty); - } + tty_insert_flip_string(tty, data+1, urb->actual_length - 1); + tty_flip_buffer_push(tty); tty_kref_put(tty); /* |
