diff options
author | NeilBrown <neilb@suse.de> | 2010-05-22 08:31:36 +1000 |
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committer | NeilBrown <neilb@suse.de> | 2010-05-22 08:31:36 +1000 |
commit | 19fdb9eefb21b72edbc365b838502780c392bad6 (patch) | |
tree | deae04c48532d6eab64ed4b0396737bb854b5506 /drivers/usb/serial/ipaq.h | |
parent | be6800a73aa2f3dc14744c3b80e676d189789f04 (diff) | |
parent | 3ff195b011d7decf501a4d55aeed312731094796 (diff) |
Merge commit '3ff195b011d7decf501a4d55aeed312731094796' into for-linus
Conflicts:
drivers/md/md.c
- Resolved conflict in md_update_sb
- Added extra 'NULL' arg to new instance of sysfs_get_dirent.
Signed-off-by: NeilBrown <neilb@suse.de>
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 2b9035918b8..00000000000 --- 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 |