diff options
Diffstat (limited to 'arch/um/drivers/chan_kern.c')
| -rw-r--r-- | arch/um/drivers/chan_kern.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 3aa351611763..368d3e97dfd9 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -203,22 +203,37 @@ void chan_enable_winch(struct list_head *chans, struct tty_struct *tty) } } -void enable_chan(struct line *line) +int enable_chan(struct line *line) { struct list_head *ele; struct chan *chan; + int err; list_for_each(ele, &line->chan_list){ chan = list_entry(ele, struct chan, list); - if(open_one_chan(chan)) + err = open_one_chan(chan); + if (err) { + if (chan->primary) + goto out_close; + continue; + } if(chan->enabled) continue; - line_setup_irq(chan->fd, chan->input, chan->output, line, - chan); + err = line_setup_irq(chan->fd, chan->input, chan->output, line, + chan); + if (err) + goto out_close; + chan->enabled = 1; } + + return 0; + + out_close: + close_chan(&line->chan_list, 0); + return err; } /* Items are added in IRQ context, when free_irq can't be called, and |