[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>
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 @@
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 @@
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;