proc tty: remove struct tty_operations::read_proc

struct tty_operations::proc_fops took it's place and there is one less
create_proc_read_entry() user now!

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 4 insertions, 29 deletions

diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 3e468d2cf730..2d8352419c0d 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1331,12 +1331,6 @@ static void capinc_tty_send_xchar(struct tty_struct *tty, char ch)
 #endif
 }
 
-static int capinc_tty_read_proc(char *page, char **start, off_t off,
-                                int count, int *eof, void *data)
-{
-        return 0;
-}
-
 static struct tty_driver *capinc_tty_driver;
 
 static const struct tty_operations capinc_ops = {
@@ -1358,7 +1352,6 @@ static const struct tty_operations capinc_ops = {
         .flush_buffer = capinc_tty_flush_buffer,
         .set_ldisc = capinc_tty_set_ldisc,
         .send_xchar = capinc_tty_send_xchar,
-        .read_proc = capinc_tty_read_proc,
 };
 
 static int capinc_tty_init(void)
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
index 854827b1d463..83adcc869437 100644
--- a/fs/proc/proc_tty.c
+++ b/fs/proc/proc_tty.c
@@ -144,22 +144,12 @@ void proc_tty_register_driver(struct tty_driver *driver)
 {
         struct proc_dir_entry *ent;
                 
-        if (!driver->driver_name || driver->proc_entry)
+        if (!driver->driver_name || driver->proc_entry ||
+            !driver->ops->proc_fops)
                 return;
 
-        if (driver->ops->proc_fops) {
-                ent = proc_create_data(driver->driver_name, 0, proc_tty_driver,
-                                       driver->ops->proc_fops, driver);
-                if (!ent)
-                        return;
-        } else if (driver->ops->read_proc) {
-                ent = create_proc_entry(driver->driver_name, 0, proc_tty_driver);
-                if (!ent)
-                        return;
-                ent->read_proc = driver->ops->read_proc;
-                ent->data = driver;
-        } else
-                return;
+        ent = proc_create_data(driver->driver_name, 0, proc_tty_driver,
+                               driver->ops->proc_fops, driver);
         driver->proc_entry = ent;
 }
 
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index c9a69575ded6..8615d661ab60 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -252,8 +252,6 @@ struct tty_operations {
         void (*set_ldisc)(struct tty_struct *tty);
         void (*wait_until_sent)(struct tty_struct *tty, int timeout);
         void (*send_xchar)(struct tty_struct *tty, char ch);
-        int (*read_proc)(char *page, char **start, off_t off,
-                          int count, int *eof, void *data);
         int (*tiocmget)(struct tty_struct *tty, struct file *file);
         int (*tiocmset)(struct tty_struct *tty, struct file *file,
                         unsigned int set, unsigned int clear);
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index abdc703a11d2..cab71ea2796d 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1093,11 +1093,6 @@ static void rfcomm_tty_hangup(struct tty_struct *tty)
         }
 }
 
-static int rfcomm_tty_read_proc(char *buf, char **start, off_t offset, int len, int *eof, void *unused)
-{
-        return 0;
-}
-
 static int rfcomm_tty_tiocmget(struct tty_struct *tty, struct file *filp)
 {
         struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
@@ -1156,7 +1151,6 @@ static const struct tty_operations rfcomm_ops = {
         .send_xchar             = rfcomm_tty_send_xchar,
         .hangup                 = rfcomm_tty_hangup,
         .wait_until_sent        = rfcomm_tty_wait_until_sent,
-        .read_proc              = rfcomm_tty_read_proc,
         .tiocmget               = rfcomm_tty_tiocmget,
         .tiocmset               = rfcomm_tty_tiocmset,
 };