diff options
| author | Johan Hovold <jhovold@gmail.com> | 2010-03-18 01:00:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-21 00:21:33 +0400 |
| commit | bbcb2b907415a90334521a31a8767cd77462c716 (patch) | |
| tree | 8ee895f4ee3352a7f57c52c5e99119bc6838edac /drivers/usb/serial/iuu_phoenix.c | |
| parent | 317149c655defedfaf432143b86a720cfc12a424 (diff) | |
| download | linux-bbcb2b907415a90334521a31a8767cd77462c716.tar.xz | |
USB: serial: allow drivers to define bulk buffer sizes
Allow drivers to define custom bulk in/out buffer sizes in struct
usb_serial_driver. If not set, fall back to the default buffer size
which matches the endpoint size.
Three drivers are currently freeing the pre-allocated buffers and
allocating larger ones to achieve this at port probe (ftdi_sio) or even
at port open (ipaq and iuu_phoenix), which needless to say is suboptimal.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/iuu_phoenix.c')
| -rw-r--r-- | drivers/usb/serial/iuu_phoenix.c | 30 |
1 files changed, 2 insertions, 28 deletions
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 43f13cf2f016..74551cb2e8ee 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -1044,34 +1044,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) if (buf == NULL) return -ENOMEM; - /* fixup the endpoint buffer size */ - kfree(port->bulk_out_buffer); - port->bulk_out_buffer = kmalloc(512, GFP_KERNEL); - port->bulk_out_size = 512; - kfree(port->bulk_in_buffer); - port->bulk_in_buffer = kmalloc(512, GFP_KERNEL); - port->bulk_in_size = 512; - - if (!port->bulk_out_buffer || !port->bulk_in_buffer) { - kfree(port->bulk_out_buffer); - kfree(port->bulk_in_buffer); - kfree(buf); - return -ENOMEM; - } - - usb_fill_bulk_urb(port->write_urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, - port->bulk_out_endpointAddress), - port->bulk_out_buffer, 512, - NULL, NULL); - - - usb_fill_bulk_urb(port->read_urb, port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->bulk_in_buffer, 512, - NULL, NULL); - priv->poll = 0; /* initialize writebuf */ @@ -1277,6 +1249,8 @@ static struct usb_serial_driver iuu_device = { }, .id_table = id_table, .num_ports = 1, + .bulk_in_size = 512, + .bulk_out_size = 512, .port_probe = iuu_create_sysfs_attrs, .port_remove = iuu_remove_sysfs_attrs, .open = iuu_open, |