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tty: n_tty: drop n_tty_trace()

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This n_tty_trace() is an always disabled debugging macro. It comes from
commit 32f13521ca ("n_tty: Line copy to user buffer in canonical
mode").

Drop it as it is dead for over a decade.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250317070046.24386-9-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby (SUSE)
2025-03-17 08:00:23 +01:00
committed by Greg Kroah-Hartman
parent e287d64605
commit 67e781f568
1 changed files with 0 additions and 14 deletions
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14
drivers/tty/n_tty.c
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@@ -81,14 +81,6 @@
#define ECHO_BLOCK 256
#define ECHO_DISCARD_WATERMARK N_TTY_BUF_SIZE - (ECHO_BLOCK + 32)
#undef N_TTY_TRACE
#ifdef N_TTY_TRACE
# define n_tty_trace(f, args...) trace_printk(f, ##args)
#else
# define n_tty_trace(f, args...) no_printk(f, ##args)
#endif
struct n_tty_data {
/* producer-published */
size_t read_head;
@@ -2026,9 +2018,6 @@ static bool canon_copy_from_read_buf(const struct tty_struct *tty, u8 **kbp,
tail = MASK(ldata->read_tail);
size = min_t(size_t, tail + n, N_TTY_BUF_SIZE);
n_tty_trace("%s: nr:%zu tail:%zu n:%zu size:%zu\n",
__func__, *nr, tail, n, size);
eol = find_next_bit(ldata->read_flags, size, tail);
more = n - (size - tail);
if (eol == N_TTY_BUF_SIZE && more) {
@@ -2046,9 +2035,6 @@ static bool canon_copy_from_read_buf(const struct tty_struct *tty, u8 **kbp,
if (!found || read_buf(ldata, eol) != __DISABLED_CHAR)
n = c;
n_tty_trace("%s: eol:%zu found:%d n:%zu c:%zu tail:%zu more:%zu\n",
__func__, eol, found, n, c, tail, more);
tty_copy(tty, *kbp, tail, n);
*kbp += n;
*nr -= n;