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tty: Fix hvc return
author
Alan Cox
<alan@linux.intel.com>
Mon, 17 Sep 2012 11:03:39 +0000
(12:03 +0100)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Mon, 17 Sep 2012 11:45:29 +0000
(
04:45
-0700)
HVC returns a size of -1 bytes for the write room in some cases.
This is bogus and not handled by the tty layer at all.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/hvc/hvc_console.c
patch
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diff --git
a/drivers/tty/hvc/hvc_console.c
b/drivers/tty/hvc/hvc_console.c
index
7f80f15
..
4a65299
100644
(file)
--- a/
drivers/tty/hvc/hvc_console.c
+++ b/
drivers/tty/hvc/hvc_console.c
@@
-558,7
+558,7
@@
static int hvc_write_room(struct tty_struct *tty)
struct hvc_struct *hp = tty->driver_data;
if (!hp)
- return
-1
;
+ return
0
;
return hp->outbuf_size - hp->n_outbuf;
}