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authorAlan Cox <alan@redhat.com>2008-07-22 11:16:42 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-22 13:03:27 -0700
commitd76f2f4462bbb2cf7bc83a35c5278177aa627e89 (patch)
treebeac09e41cf05235676752dac220d4172bb3ec66 /drivers/usb/serial/io_edgeport.c
parent03f0dbf74c7a117c270e63d62d5e4927af6f295b (diff)
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>
Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
-rw-r--r--drivers/usb/serial/io_edgeport.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index b4bd6847a96..bfa508ddb0f 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -1404,15 +1404,15 @@ static int edge_write_room(struct tty_struct *tty)
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 @@ static int edge_chars_in_buffer(struct tty_struct *tty)
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);