procfs: new helper - PDE_DATA(inode)
The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data. Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/sound/core/info.c b/sound/core/info.c
index a4e2de6..3aa8864 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -310,12 +310,10 @@
struct snd_info_entry *entry;
struct snd_info_private_data *data;
struct snd_info_buffer *buffer;
- struct proc_dir_entry *p;
int mode, err;
mutex_lock(&info_mutex);
- p = PDE(inode);
- entry = p == NULL ? NULL : (struct snd_info_entry *)p->data;
+ entry = PDE_DATA(inode);
if (entry == NULL || ! entry->p) {
mutex_unlock(&info_mutex);
return -ENODEV;