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authorJeff Dike <jdike@addtoit.com>2008-02-04 22:30:42 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:25 -0800
commitacb2cf34cf624b9b3ab20c2c83543146128a4dad (patch)
tree51ab61c256a8da273c5f7ede4a7512867fd5261f
parent054211acad0cb911177507a039d8e7a25bff084d (diff)
uml: console driver cleanups
Console driver cleanups - Changed an instance of foo = bar + foo to foo += bar Removed checks of tty->stopped - I don't think the low-level driver has any business looking at that Removed an annoying warning Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/um/drivers/line.c19
1 files changed, 2 insertions, 17 deletions
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 83bf15a3dda..5cff6536a84 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -48,7 +48,7 @@ static int write_room(struct line *line)
n = line->head - line->tail;
if (n <= 0)
- n = LINE_BUFSIZE + n; /* The other case */
+ n += LINE_BUFSIZE; /* The other case */
return n - 1;
}
@@ -58,17 +58,10 @@ int line_write_room(struct tty_struct *tty)
unsigned long flags;
int room;
- if (tty->stopped)
- return 0;
-
spin_lock_irqsave(&line->lock, flags);
room = write_room(line);
spin_unlock_irqrestore(&line->lock, flags);
- /*XXX: Warning to remove */
- if (0 == room)
- printk(KERN_DEBUG "%s: %s: no room left in buffer\n",
- __FUNCTION__,tty->name);
return room;
}
@@ -79,8 +72,7 @@ int line_chars_in_buffer(struct tty_struct *tty)
int ret;
spin_lock_irqsave(&line->lock, flags);
-
- /*write_room subtracts 1 for the needed NULL, so we readd it.*/
+ /* write_room subtracts 1 for the needed NULL, so we readd it.*/
ret = LINE_BUFSIZE - (write_room(line) + 1);
spin_unlock_irqrestore(&line->lock, flags);
@@ -184,10 +176,6 @@ void line_flush_buffer(struct tty_struct *tty)
unsigned long flags;
int err;
- /*XXX: copied from line_write, verify if it is correct!*/
- if (tty->stopped)
- return;
-
spin_lock_irqsave(&line->lock, flags);
err = flush_buffer(line);
spin_unlock_irqrestore(&line->lock, flags);
@@ -213,9 +201,6 @@ int line_write(struct tty_struct *tty, const unsigned char *buf, int len)
unsigned long flags;
int n, ret = 0;
- if (tty->stopped)
- return 0;
-
spin_lock_irqsave(&line->lock, flags);
if (line->head != line->tail)
ret = buffer_data(line, buf, len);