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authorAlan Cox <alan@linux.intel.com>2010-02-18 17:44:01 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 23:55:12 +0100
commita108bfcb372d8c4452701039308fb95747911c59 (patch)
tree3528621937692e28081f71131cddc3130e2641ad /drivers/usb/serial/ipaq.c
parentUSB: tty: Add a function to insert a string of characters with the same flag (diff)
downloadlinux-a108bfcb372d8c4452701039308fb95747911c59.tar.xz
linux-a108bfcb372d8c4452701039308fb95747911c59.zip
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/ipaq.c')
-rw-r--r--drivers/usb/serial/ipaq.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index d6231c38813e..3fea9298eb15 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -747,7 +747,6 @@ static void ipaq_read_bulk_callback(struct urb *urb)
tty = tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
- tty_buffer_request_room(tty, urb->actual_length);
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
bytes_in += urb->actual_length;