Revision 00b4703f03ce04bd7f2f912fd05a243096ab826f authored by Ondrej Zary on 29 July 2010, 20:32:20 UTC, committed by Russell King on 30 July 2010, 22:29:33 UTC
I was testing two CyberPro 2000 based PCI cards on x86 and the machine always
hanged completely when the cyber2000fb module was loaded. It seems that the
card hangs when some registers are accessed too quickly after writing RAMDAC
control register. With this patch, both card work.

Add delay after RAMDAC control register write to prevent hangs on module load.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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squashfs.h
/*
 * Squashfs - a compressed read only filesystem for Linux
 *
 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
 * Phillip Lougher <phillip@lougher.demon.co.uk>
 *
 * 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,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * squashfs.h
 */

#define TRACE(s, args...)	pr_debug("SQUASHFS: "s, ## args)

#define ERROR(s, args...)	pr_err("SQUASHFS error: "s, ## args)

#define WARNING(s, args...)	pr_warning("SQUASHFS: "s, ## args)

static inline struct squashfs_inode_info *squashfs_i(struct inode *inode)
{
	return list_entry(inode, struct squashfs_inode_info, vfs_inode);
}

/* block.c */
extern int squashfs_read_data(struct super_block *, void **, u64, int, u64 *,
				int, int);

/* cache.c */
extern struct squashfs_cache *squashfs_cache_init(char *, int, int);
extern void squashfs_cache_delete(struct squashfs_cache *);
extern struct squashfs_cache_entry *squashfs_cache_get(struct super_block *,
				struct squashfs_cache *, u64, int);
extern void squashfs_cache_put(struct squashfs_cache_entry *);
extern int squashfs_copy_data(void *, struct squashfs_cache_entry *, int, int);
extern int squashfs_read_metadata(struct super_block *, void *, u64 *,
				int *, int);
extern struct squashfs_cache_entry *squashfs_get_fragment(struct super_block *,
				u64, int);
extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
				u64, int);
extern int squashfs_read_table(struct super_block *, void *, u64, int);

/* decompressor.c */
extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);

/* export.c */
extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
				unsigned int);

/* fragment.c */
extern int squashfs_frag_lookup(struct super_block *, unsigned int, u64 *);
extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
				u64, unsigned int);

/* id.c */
extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
extern __le64 *squashfs_read_id_index_table(struct super_block *, u64,
				unsigned short);

/* inode.c */
extern struct inode *squashfs_iget(struct super_block *, long long,
				unsigned int);
extern int squashfs_read_inode(struct inode *, long long);

/* xattr.c */
extern ssize_t squashfs_listxattr(struct dentry *, char *, size_t);

/*
 * Inodes, files,  decompressor and xattr operations
 */

/* dir.c */
extern const struct file_operations squashfs_dir_ops;

/* export.c */
extern const struct export_operations squashfs_export_ops;

/* file.c */
extern const struct address_space_operations squashfs_aops;

/* inode.c */
extern const struct inode_operations squashfs_inode_ops;

/* namei.c */
extern const struct inode_operations squashfs_dir_inode_ops;

/* symlink.c */
extern const struct address_space_operations squashfs_symlink_aops;
extern const struct inode_operations squashfs_symlink_inode_ops;

/* xattr.c */
extern const struct xattr_handler *squashfs_xattr_handlers[];

/* zlib_wrapper.c */
extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
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