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tegra: don't wank with d_find_alias() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-01-30 21:17:57 -05:00
parent 0990a97a1f
commit 8add862fad
1 changed files with 3 additions and 9 deletions
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12
drivers/iommu/tegra-smmu.c
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@ -1026,15 +1026,11 @@ static ssize_t smmu_debugfs_stats_write(struct file *file,
static int smmu_debugfs_stats_show(struct seq_file *s, void *v)
{
struct smmu_debugfs_info *info;
struct smmu_device *smmu;
struct dentry *dent;
struct smmu_debugfs_info *info = s->private;
struct smmu_device *smmu = info->smmu;
int i;
const char * const stats[] = { "hit", "miss", };
dent = d_find_alias(s->private);
info = dent->d_inode->i_private;
smmu = info->smmu;
for (i = 0; i < ARRAY_SIZE(stats); i++) {
u32 val;
@ -1048,14 +1044,12 @@ static int smmu_debugfs_stats_show(struct seq_file *s, void *v)
stats[i], val, offs);
}
seq_printf(s, "\n");
dput(dent);
return 0;
}
static int smmu_debugfs_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, smmu_debugfs_stats_show, inode);
return single_open(file, smmu_debugfs_stats_show, inode->i_private);
}
static const struct file_operations smmu_debugfs_stats_fops = {