diff options
Diffstat (limited to 'drivers/usb/serial/ipaq.h')
| -rw-r--r-- | drivers/usb/serial/ipaq.h | 54 | 
1 files changed, 0 insertions, 54 deletions
diff --git a/drivers/usb/serial/ipaq.h b/drivers/usb/serial/ipaq.h deleted file mode 100644 index 2b9035918b85..000000000000 --- a/drivers/usb/serial/ipaq.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * USB Compaq iPAQ driver - * - *	Copyright (C) 2001 - 2002 - *	    Ganesh Varadarajan <ganesh@veritas.com> - * - *	This program is free software; you can redistribute it and/or modify - *	it under the terms of the GNU General Public License as published by - *	the Free Software Foundation; either version 2 of the License, or - *	(at your option) any later version. - * - */ - -#ifndef __LINUX_USB_SERIAL_IPAQ_H -#define __LINUX_USB_SERIAL_IPAQ_H - -/* - * Since we can't queue our bulk write urbs (don't know why - it just - * doesn't work), we can send down only one write urb at a time. The simplistic - * approach taken by the generic usbserial driver will work, but it's not good - * for performance. Therefore, we buffer upto URBDATA_QUEUE_MAX bytes of write - * requests coming from the line discipline. This is done by chaining them - * in lists of struct ipaq_packet, each packet holding a maximum of - * PACKET_SIZE bytes. - * - * ipaq_write() can be called from bottom half context; hence we can't - * allocate memory for packets there. So we initialize a pool of packets at - * the first open and maintain a freelist. - * - * The value of PACKET_SIZE was empirically determined by - * checking the maximum write sizes sent down by the ppp ldisc. - * URBDATA_QUEUE_MAX is set to 64K, which is the maximum TCP window size. - */ - -struct ipaq_packet { -	char			*data; -	size_t			len; -	size_t			written; -	struct list_head	list; -}; - -struct ipaq_private { -	int			active; -	int			queue_len; -	int			free_len; -	struct list_head	queue; -	struct list_head	freelist; -}; - -#define URBDATA_SIZE		4096 -#define URBDATA_QUEUE_MAX	(64 * 1024) -#define PACKET_SIZE		256 - -#endif  | 
