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| author | Jiri Slaby <jirislaby@gmail.com> | 2006-10-04 02:15:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-04 07:55:13 -0700 |
| commit | b3218a79aa3d58b975b066c300153a8520f7051c (patch) | |
| tree | ecdbadacd84a00682bf047c0cdae1194cad3c38c /drivers/char/generic_serial.c | |
| parent | 1d2c8eea698514cfaa53fc991b960791d09508e1 (diff) | |
| download | op-kernel-dev-b3218a79aa3d58b975b066c300153a8520f7051c.zip op-kernel-dev-b3218a79aa3d58b975b066c300153a8520f7051c.tar.gz | |
[PATCH] char: kill unneeded memsets
char, another tmp_buf cleanup
No need to allocate one page as a side buffer. It's no more used. Clean this
(de)allocs of this useless memory pages in char subtree.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/generic_serial.c')
| -rw-r--r-- | drivers/char/generic_serial.c | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c index 4711d9b..87127e4 100644 --- a/drivers/char/generic_serial.c +++ b/drivers/char/generic_serial.c @@ -33,8 +33,6 @@ #define DEBUG -static char * tmp_buf; - static int gs_debug; #ifdef DEBUG @@ -205,7 +203,7 @@ int gs_write(struct tty_struct * tty, if (!tty) return -EIO; port = tty->driver_data; - if (!port || !port->xmit_buf || !tmp_buf) + if (!port || !port->xmit_buf) return -EIO; local_save_flags(flags); @@ -837,24 +835,9 @@ void gs_set_termios (struct tty_struct * tty, int gs_init_port(struct gs_port *port) { unsigned long flags; - unsigned long page; func_enter (); - if (!tmp_buf) { - page = get_zeroed_page(GFP_KERNEL); - spin_lock_irqsave (&port->driver_lock, flags); /* Don't expect this to make a difference. */ - if (tmp_buf) - free_page(page); - else - tmp_buf = (unsigned char *) page; - spin_unlock_irqrestore (&port->driver_lock, flags); - if (!tmp_buf) { - func_exit (); - return -ENOMEM; - } - } - if (port->flags & ASYNC_INITIALIZED) { func_exit (); return 0; |
