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/drivers/acpi/button.c b/drivers/acpi/button.c
index 86c7d54..5d57cd5 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -128,7 +128,7 @@
static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
{
- return single_open(file, acpi_button_state_seq_show, PDE(inode)->data);
+ return single_open(file, acpi_button_state_seq_show, PDE_DATA(inode));
}
static const struct file_operations acpi_button_state_fops = {