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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/riscom8.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/riscom8.c')
-rw-r--r--drivers/char/riscom8.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 214d850..b0ab3f2 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -81,7 +81,6 @@
static struct riscom_board * IRQ_to_board[16];
static struct tty_driver *riscom_driver;
-static unsigned char * tmp_buf;
static unsigned long baud_table[] = {
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
@@ -1124,7 +1123,7 @@ static int rc_write(struct tty_struct * tty,
bp = port_Board(port);
- if (!tty || !port->xmit_buf || !tmp_buf)
+ if (!tty || !port->xmit_buf)
return 0;
save_flags(flags);
@@ -1612,11 +1611,6 @@ static inline int rc_init_drivers(void)
if (!riscom_driver)
return -ENOMEM;
- if (!(tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL))) {
- printk(KERN_ERR "rc: Couldn't get free page.\n");
- put_tty_driver(riscom_driver);
- return 1;
- }
memset(IRQ_to_board, 0, sizeof(IRQ_to_board));
riscom_driver->owner = THIS_MODULE;
riscom_driver->name = "ttyL";
@@ -1629,7 +1623,6 @@ static inline int rc_init_drivers(void)
riscom_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(riscom_driver, &riscom_ops);
if ((error = tty_register_driver(riscom_driver))) {
- free_page((unsigned long)tmp_buf);
put_tty_driver(riscom_driver);
printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, "
"error = %d\n",
@@ -1657,7 +1650,6 @@ static void rc_release_drivers(void)
save_flags(flags);
cli();
- free_page((unsigned long)tmp_buf);
tty_unregister_driver(riscom_driver);
put_tty_driver(riscom_driver);
restore_flags(flags);
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