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tty: Fix hvc return 

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>
hifive-unleashed-5.1
Alan Cox 2012-09-17 12:03:39 +01:00 committed by Greg Kroah-Hartman
parent 7ac3c93e5d
commit d83114e975
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/hvc/hvc_console.c
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@ -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;
}