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| author | Jeff Dike <jdike@addtoit.com> | 2008-02-04 22:30:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:25 -0800 |
| commit | acb2cf34cf624b9b3ab20c2c83543146128a4dad (patch) | |
| tree | 51ab61c256a8da273c5f7ede4a7512867fd5261f | |
| parent | 054211acad0cb911177507a039d8e7a25bff084d (diff) | |
| download | linux-stable-acb2cf34cf624b9b3ab20c2c83543146128a4dad.tar.gz linux-stable-acb2cf34cf624b9b3ab20c2c83543146128a4dad.tar.bz2 linux-stable-acb2cf34cf624b9b3ab20c2c83543146128a4dad.zip | |
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.c | 19 |
1 files changed, 2 insertions, 17 deletions
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 83bf15a3dda8..5cff6536a843 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); |