io_edgeport: Fix various bogus returns to the tty layer
The edgeport reports negative error codes to functions that do not
expect them. This can cause ports to jam forever
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index b4bd684..bfa508d 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -1404,15 +1404,15 @@
dbg("%s", __func__);
if (edge_port == NULL)
- return -ENODEV;
+ return 0;
if (edge_port->closePending)
- return -ENODEV;
+ return 0;
dbg("%s - port %d", __func__, port->number);
if (!edge_port->open) {
dbg("%s - port not opened", __func__);
- return -EINVAL;
+ return 0;
}
/* total of both buffers is still txCredit */
@@ -1444,13 +1444,13 @@
dbg("%s", __func__);
if (edge_port == NULL)
- return -ENODEV;
+ return 0;
if (edge_port->closePending)
- return -ENODEV;
+ return 0;
if (!edge_port->open) {
dbg("%s - port not opened", __func__);
- return -EINVAL;
+ return 0;
}
spin_lock_irqsave(&edge_port->ep_lock, flags);