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authorJiri Slaby <jirislaby@gmail.com>2006-10-04 02:15:27 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:13 -0700
commitb3218a79aa3d58b975b066c300153a8520f7051c (patch)
treeecdbadacd84a00682bf047c0cdae1194cad3c38c /drivers/char/generic_serial.c
parent1d2c8eea698514cfaa53fc991b960791d09508e1 (diff)
downloadop-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.c19
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;
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