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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 
cyber2000fb: fix machine hang on module load
 
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>
1 parent f2d2420
Raw File
xattr_user.c 
#include <linux/reiserfs_fs.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/xattr.h>
#include <linux/reiserfs_xattr.h>
#include <asm/uaccess.h>

static int
user_get(struct dentry *dentry, const char *name, void *buffer, size_t size,
	 int handler_flags)
{

	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
		return -EINVAL;
	if (!reiserfs_xattrs_user(dentry->d_sb))
		return -EOPNOTSUPP;
	return reiserfs_xattr_get(dentry->d_inode, name, buffer, size);
}

static int
user_set(struct dentry *dentry, const char *name, const void *buffer,
	 size_t size, int flags, int handler_flags)
{
	if (strlen(name) < sizeof(XATTR_USER_PREFIX))
		return -EINVAL;

	if (!reiserfs_xattrs_user(dentry->d_sb))
		return -EOPNOTSUPP;
	return reiserfs_xattr_set(dentry->d_inode, name, buffer, size, flags);
}

static size_t user_list(struct dentry *dentry, char *list, size_t list_size,
			const char *name, size_t name_len, int handler_flags)
{
	const size_t len = name_len + 1;

	if (!reiserfs_xattrs_user(dentry->d_sb))
		return 0;
	if (list && len <= list_size) {
		memcpy(list, name, name_len);
		list[name_len] = '\0';
	}
	return len;
}

const struct xattr_handler reiserfs_xattr_user_handler = {
	.prefix = XATTR_USER_PREFIX,
	.get = user_get,
	.set = user_set,
	.list = user_list,
};
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