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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-04-30 00:53:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:45 -0700 |
| commit | 978e595f88a1fba5869aa42a4af4fba36f33ecac (patch) | |
| tree | 60848f49949c5b7b518621ee36cdc6d500244539 /drivers/char/epca.c | |
| parent | ac0e4b7d319bf284bb64bc7e1c051417386b34a4 (diff) | |
| download | linux-978e595f88a1fba5869aa42a4af4fba36f33ecac.tar.bz2 | |
tty/serial: lay the foundations for the next set of reworks
- Stop drivers calling their own flush method indirectly, it obfuscates code
and it will change soon anyway
- A few more lock_kernel paths temporarily needed in some driver internal
waiting code
- Remove private put_char method that does a write call for one char - we
have that anyway
- Most but not yet all of the termios copy under lock fixing (some has other
dependencies to follow)
- Note a few locking bugs in drivers found in the process
- Kill remaining [ab]users of TIOCG/SSOFTCAR in the driver, these must go to
fix the termios locking
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/epca.c')
| -rw-r--r-- | drivers/char/epca.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/char/epca.c b/drivers/char/epca.c index 37d4dca5a5d4..39c6a36e395b 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -157,7 +157,6 @@ static void epca_error(int, char *); static void pc_close(struct tty_struct *, struct file *); static void shutdown(struct channel *); static void pc_hangup(struct tty_struct *); -static void pc_put_char(struct tty_struct *, unsigned char); static int pc_write_room(struct tty_struct *); static int pc_chars_in_buffer(struct tty_struct *); static void pc_flush_buffer(struct tty_struct *); @@ -459,8 +458,7 @@ static void pc_close(struct tty_struct *tty, struct file *filp) setup_empty_event(tty, ch); tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ } - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + pc_flush_buffer(tty); tty_ldisc_flush(tty); shutdown(ch); @@ -532,8 +530,7 @@ static void pc_hangup(struct tty_struct *tty) if ((ch = verifyChannel(tty)) != NULL) { unsigned long flags; - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + pc_flush_buffer(tty); tty_ldisc_flush(tty); shutdown(ch); @@ -645,11 +642,6 @@ static int pc_write(struct tty_struct *tty, return amountCopied; } -static void pc_put_char(struct tty_struct *tty, unsigned char c) -{ - pc_write(tty, &c, 1); -} - static int pc_write_room(struct tty_struct *tty) { int remain; @@ -1035,7 +1027,6 @@ static const struct tty_operations pc_ops = { .flush_buffer = pc_flush_buffer, .chars_in_buffer = pc_chars_in_buffer, .flush_chars = pc_flush_chars, - .put_char = pc_put_char, .ioctl = pc_ioctl, .set_termios = pc_set_termios, .stop = pc_stop, |