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Commit 365e0223 authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds
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[PATCH] Char: specialix, kill unneeded page alloc



The driver is allocating a page but doesn't actually use it for anything.

(History from the old ->write method before Linus cleaned it up)

Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
Acked-by: default avatarAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 6e9a4738
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+1 −10
Original line number Diff line number Diff line
@@ -182,7 +182,6 @@ static int sx_poll = HZ;
#define RS_EVENT_WRITE_WAKEUP	0

static struct tty_driver *specialix_driver;
static unsigned char * tmp_buf;

static unsigned long baud_table[] =  {
	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
@@ -1674,7 +1673,7 @@ static int sx_write(struct tty_struct * tty,

	bp = port_Board(port);

	if (!port->xmit_buf || !tmp_buf) {
	if (!port->xmit_buf) {
		func_exit();
		return 0;
	}
@@ -2398,12 +2397,6 @@ static int sx_init_drivers(void)
		return 1;
	}

	if (!(tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL))) {
		printk(KERN_ERR "sx: Couldn't get free page.\n");
		put_tty_driver(specialix_driver);
		func_exit();
		return 1;
	}
	specialix_driver->owner = THIS_MODULE;
	specialix_driver->name = "ttyW";
	specialix_driver->major = SPECIALIX_NORMAL_MAJOR;
@@ -2417,7 +2410,6 @@ static int sx_init_drivers(void)

	if ((error = tty_register_driver(specialix_driver))) {
		put_tty_driver(specialix_driver);
		free_page((unsigned long)tmp_buf);
		printk(KERN_ERR "sx: Couldn't register specialix IO8+ driver, error = %d\n",
		       error);
		func_exit();
@@ -2443,7 +2435,6 @@ static void sx_release_drivers(void)
{
	func_enter();

	free_page((unsigned long)tmp_buf);
	tty_unregister_driver(specialix_driver);
	put_tty_driver(specialix_driver);
	func_exit();