From 9dd5139f973f55ab4b2e9aff8171781f1e55b29d Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sat, 15 Jun 2013 09:36:03 -0400 Subject: [PATCH] tty: Factor flip buffer initialization into helper function Factor shared code; prepare for adding 0-sized sentinel flip buffer. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index a5e3962..56d4602 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -22,6 +22,15 @@ #define MIN_TTYB_SIZE 256 #define TTYB_ALIGN_MASK 255 +static void tty_buffer_reset(struct tty_buffer *p, size_t size) +{ + p->used = 0; + p->size = size; + p->next = NULL; + p->commit = 0; + p->read = 0; +} + /** * tty_buffer_free_all - free buffers used by a tty * @tty: tty to free from @@ -70,11 +79,8 @@ static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size) p = kmalloc(sizeof(struct tty_buffer) + 2 * size, GFP_ATOMIC); if (p == NULL) return NULL; - p->used = 0; - p->size = size; - p->next = NULL; - p->commit = 0; - p->read = 0; + + tty_buffer_reset(p, size); port->buf.memory_used += size; return p; } @@ -185,10 +191,7 @@ static struct tty_buffer *tty_buffer_find(struct tty_port *port, size_t size) struct tty_buffer *t = *tbh; *tbh = t->next; - t->next = NULL; - t->used = 0; - t->commit = 0; - t->read = 0; + tty_buffer_reset(t, t->size); port->buf.memory_used += t->size; return t; } -- 2.7.4