new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

drivers/isdn/hysdn/hysdn_proclog.c

@@ -173,7 +173,7 @@ hysdn_log_read(struct file *file, char __user *buf, size_t count, loff_t *off)
 {
 	struct log_data *inf;
 	int len;
-	struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+	struct proc_dir_entry *pde = PDE(file_inode(file));
 	struct procdata *pd = NULL;
 	hysdn_card *card;
 
@@ -319,7 +319,7 @@ static unsigned int
 hysdn_log_poll(struct file *file, poll_table *wait)
 {
 	unsigned int mask = 0;
-	struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
+	struct proc_dir_entry *pde = PDE(file_inode(file));
 	hysdn_card *card;
 	struct procdata *pd = NULL;