From 6f6ed696945c9c98fb6e0def32d29411d958a6fa Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 13 May 2010 21:02:01 +0200 Subject: [PATCH] USB: ir-usb: allow custom bulk buffer size without reallocation Use usb_serial_driver bulk_in_size and bulk_out_size to make sure buffers of appropriate sizes are allocated in the first place rather than reallocating them at every open. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ir-usb.c | 30 +++++------------------------- 1 file changed, 5 insertions(+), 25 deletions(-) diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 71bdbe06baff..aaebb70aca59 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -297,35 +297,10 @@ static int ir_startup(struct usb_serial *serial) static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) { - char *buffer; int result = 0; dbg("%s - port %d", __func__, port->number); - if (buffer_size) { - /* override the default buffer sizes */ - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", __func__); - return -ENOMEM; - } - kfree(port->read_urb->transfer_buffer); - port->read_urb->transfer_buffer = buffer; - port->read_urb->transfer_buffer_length = buffer_size; - port->bulk_in_buffer = buffer; - - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", __func__); - return -ENOMEM; - } - kfree(port->write_urb->transfer_buffer); - port->write_urb->transfer_buffer = buffer; - port->write_urb->transfer_buffer_length = buffer_size; - port->bulk_out_buffer = buffer; - port->bulk_out_size = buffer_size; - } - /* Start reading from the device */ usb_fill_bulk_urb( port->read_urb, @@ -585,6 +560,11 @@ static int __init ir_init(void) { int retval; + if (buffer_size) { + ir_device.bulk_in_size = buffer_size; + ir_device.bulk_out_size = buffer_size; + } + retval = usb_serial_register(&ir_device); if (retval) goto failed_usb_serial_register; -- 2.20.1