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tty: buffers: Move hidden buffer index advance into outer loop 

The advance of the 'read' buffer index belongs in the outer
flip buffer consume loop, with the other buffer index arithmetic.

No functional change.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2015-07-12 20:50:50 -04:00 committed by Greg Kroah-Hartman
parent 069f38b498
commit af5554f957
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/tty_buffer.c
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@ -444,7 +444,6 @@ receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count)
if (count) if (count)
disc->ops->receive_buf(tty, p, f, count); disc->ops->receive_buf(tty, p, f, count);
} }
head->read += count;
return count; return count;
} }
@ -506,6 +505,7 @@ static void flush_to_ldisc(struct work_struct *work)
count = receive_buf(tty, head, count); count = receive_buf(tty, head, count);
if (!count) if (!count)
break; break;
head->read += count;
} }
mutex_unlock(&buf->lock); mutex_unlock(&buf->lock);