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Revision d3ac0778801708caecb2b172328064255a350432 authored by Arjan Mels on 20 May 2011, 21:25:46 UTC, committed by Greg Kroah-Hartman on 07 June 2011, 19:28:41 UTC 
staging: usbip: bugfix prevent driver unbind
 
Implemented pre_reset and post_reset methods of the driver to prevent the
driver from being unbound upon a device reset. Because of this also the
asynchronous reset introduced to prevent a race condition is no longer necessary
(and sometimes causes problems, because it comes later then expected).

Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: usbip-devel <usbip-devel@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1 parent c11c4ee
Raw File
find_last_bit.c 
/* find_last_bit.c: fallback find next bit implementation
 *
 * Copyright (C) 2008 IBM Corporation
 * Written by Rusty Russell <rusty@rustcorp.com.au>
 * (Inspired by David Howell's find_next_bit implementation)
 *
 * 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.
 */

#include <linux/bitops.h>
#include <linux/module.h>
#include <asm/types.h>
#include <asm/byteorder.h>

#ifndef find_last_bit

unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
{
	unsigned long words;
	unsigned long tmp;

	/* Start at final word. */
	words = size / BITS_PER_LONG;

	/* Partial final word? */
	if (size & (BITS_PER_LONG-1)) {
		tmp = (addr[words] & (~0UL >> (BITS_PER_LONG
					 - (size & (BITS_PER_LONG-1)))));
		if (tmp)
			goto found;
	}

	while (words) {
		tmp = addr[--words];
		if (tmp) {
found:
			return words * BITS_PER_LONG + __fls(tmp);
		}
	}

	/* Not found */
	return size;
}
EXPORT_SYMBOL(find_last_bit);

#endif
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