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Commit 0b4068a1 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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tty: simplify buffer allocator cleanups 



Having cleaned up the allocators we might as well remove the inline helpers
for some of it

Signed-off-by: default avatarAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c481c707

drivers/char/n_tty.c

+5 −17
Original line number Diff line number Diff line
@@ -73,17 +73,6 @@ 
#define ECHO_OP_SET_CANON_COL 0x81

#define ECHO_OP_ERASE_TAB 0x82



static inline unsigned char *alloc_buf(void)

{

	gfp_t prio = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;

	return kmalloc(N_TTY_BUF_SIZE, prio);

}



static inline void free_buf(unsigned char *buf)

{

	kfree(buf);

}



static inline int tty_put_user(struct tty_struct *tty, unsigned char x,

			       unsigned char __user *ptr)

{
@@ -1551,11 +1540,11 @@ static void n_tty_close(struct tty_struct *tty) 
{

	n_tty_flush_buffer(tty);

	if (tty->read_buf) {

		free_buf(tty->read_buf);

		kfree(tty->read_buf);

		tty->read_buf = NULL;

	}

	if (tty->echo_buf) {

		free_buf(tty->echo_buf);

		kfree(tty->echo_buf);

		tty->echo_buf = NULL;

	}

}
@@ -1577,17 +1566,16 @@ static int n_tty_open(struct tty_struct *tty) 


	/* These are ugly. Currently a malloc failure here can panic */

	if (!tty->read_buf) {

		tty->read_buf = alloc_buf();

		tty->read_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL);

		if (!tty->read_buf)

			return -ENOMEM;

	}

	if (!tty->echo_buf) {

		tty->echo_buf = alloc_buf();

		tty->echo_buf = kzalloc(N_TTY_BUF_SIZE, GFP_KERNEL);



		if (!tty->echo_buf)

			return -ENOMEM;

	}

	memset(tty->read_buf, 0, N_TTY_BUF_SIZE);

	memset(tty->echo_buf, 0, N_TTY_BUF_SIZE);

	reset_buffer_flags(tty);

	tty->column = 0;

	n_tty_set_termios(tty, NULL);