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tty: remove buf parameter from tty_name()

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tty_name no longer uses the buf parameter, so remove it along with all
the 64 byte stack buffers that used to be passed in.

Mostly generated by the coccinelle script

@depends on patch@
identifier buf;
constant C;
expression tty;
@@
- char buf[C];
  <+...
- tty_name(tty, buf)
+ tty_name(tty)
  ...+>

allmodconfig compiles, so I'm fairly confident the stack buffers
weren't used for other purposes as well.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rasmus Villemoes
2015-03-31 15:55:59 +02:00
committed by Greg Kroah-Hartman
parent 917162c936
commit 429b474990
11 changed files with 28 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/tty/tty_io.c
View File

@@ -235,7 +235,6 @@ static void tty_del_file(struct file *file)
/**
* tty_name - return tty naming
* @tty: tty structure
* @buf: unused
*
* Convert a tty structure into a name. The name reflects the kernel
* naming policy and if udev is in use may not reflect user space
@@ -243,7 +242,7 @@ static void tty_del_file(struct file *file)
* Locking: none
*/
const char *tty_name(const struct tty_struct *tty, char *buf)
const char *tty_name(const struct tty_struct *tty)
{
if (!tty) /* Hmm. NULL pointer. That's fun. */
return "NULL tty";
@@ -768,8 +767,7 @@ static void do_tty_hangup(struct work_struct *work)
void tty_hangup(struct tty_struct *tty)
{
#ifdef TTY_DEBUG_HANGUP
char buf[64];
printk(KERN_DEBUG "%s hangup...\n", tty_name(tty, buf));
printk(KERN_DEBUG "%s hangup...\n", tty_name(tty));
#endif
schedule_work(&tty->hangup_work);
}
@@ -788,9 +786,7 @@ EXPORT_SYMBOL(tty_hangup);
void tty_vhangup(struct tty_struct *tty)
{
#ifdef TTY_DEBUG_HANGUP
char buf[64];
printk(KERN_DEBUG "%s vhangup...\n", tty_name(tty, buf));
printk(KERN_DEBUG "%s vhangup...\n", tty_name(tty));
#endif
__tty_hangup(tty, 0);
}
@@ -829,9 +825,7 @@ void tty_vhangup_self(void)
static void tty_vhangup_session(struct tty_struct *tty)
{
#ifdef TTY_DEBUG_HANGUP
char buf[64];
printk(KERN_DEBUG "%s vhangup session...\n", tty_name(tty, buf));
printk(KERN_DEBUG "%s vhangup session...\n", tty_name(tty));
#endif
__tty_hangup(tty, 1);
}
@@ -1767,7 +1761,6 @@ int tty_release(struct inode *inode, struct file *filp)
struct tty_struct *o_tty = NULL;
int do_sleep, final;
int idx;
char buf[64];
long timeout = 0;
int once = 1;
@@ -1791,7 +1784,7 @@ int tty_release(struct inode *inode, struct file *filp)
#ifdef TTY_DEBUG_HANGUP
printk(KERN_DEBUG "%s: %s (tty count=%d)...\n", __func__,
tty_name(tty, buf), tty->count);
tty_name(tty), tty->count);
#endif
if (tty->ops->close)
@@ -1842,7 +1835,7 @@ int tty_release(struct inode *inode, struct file *filp)
if (once) {
once = 0;
printk(KERN_WARNING "%s: %s: read/write wait queue active!\n",
__func__, tty_name(tty, buf));
__func__, tty_name(tty));
}
schedule_timeout_killable(timeout);
if (timeout < 120 * HZ)
@@ -1854,13 +1847,13 @@ int tty_release(struct inode *inode, struct file *filp)
if (o_tty) {
if (--o_tty->count < 0) {
printk(KERN_WARNING "%s: bad pty slave count (%d) for %s\n",
__func__, o_tty->count, tty_name(o_tty, buf));
__func__, o_tty->count, tty_name(o_tty));
o_tty->count = 0;
}
}
if (--tty->count < 0) {
printk(KERN_WARNING "%s: bad tty->count (%d) for %s\n",
__func__, tty->count, tty_name(tty, buf));
__func__, tty->count, tty_name(tty));
tty->count = 0;
}
@@ -1903,7 +1896,7 @@ int tty_release(struct inode *inode, struct file *filp)
return 0;
#ifdef TTY_DEBUG_HANGUP
printk(KERN_DEBUG "%s: %s: final close\n", __func__, tty_name(tty, buf));
printk(KERN_DEBUG "%s: %s: final close\n", __func__, tty_name(tty));
#endif
/*
* Ask the line discipline code to release its structures
@@ -1914,7 +1907,8 @@ int tty_release(struct inode *inode, struct file *filp)
tty_flush_works(tty);
#ifdef TTY_DEBUG_HANGUP
printk(KERN_DEBUG "%s: %s: freeing structure...\n", __func__, tty_name(tty, buf));
printk(KERN_DEBUG "%s: %s: freeing structure...\n", __func__,
tty_name(tty));
#endif
/*
* The release_tty function takes care of the details of clearing