[PATCH] tty: ipwireless: fix error handling

[Tong Zhang]

ipwireless_send_packet() can only return 0 on success and -ENOMEM on
error, the caller should check non zero for error condition

Signed-off-by: Tong Zhang <ztong0...@gmail.com>
---
 drivers/tty/ipwireless/network.c | 4 ++--
 drivers/tty/ipwireless/tty.c     | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/ipwireless/network.c b/drivers/tty/ipwireless/network.c
index cf20616340a1..b6f677f4004c 100644
--- a/drivers/tty/ipwireless/network.c
+++ b/drivers/tty/ipwireless/network.c
@@ -117,7 +117,7 @@ static int ipwireless_ppp_start_xmit(struct ppp_channel 
*ppp_channel,
                                               skb->len,
                                               notify_packet_sent,
                                               network);
-                       if (ret == -1) {
+                       if (ret != 0) {
                                skb_pull(skb, 2);
                                return 0;
                        }
@@ -134,7 +134,7 @@ static int ipwireless_ppp_start_xmit(struct ppp_channel 
*ppp_channel,
                                               notify_packet_sent,
                                               network);
                        kfree(buf);
-                       if (ret == -1)
+                       if (ret != 0)
                                return 0;
                }
                kfree_skb(skb);
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index fad3401e604d..0230e0fd3937 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -218,7 +218,7 @@ static int ipw_write(struct tty_struct *linux_tty,
        ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS,
                               buf, count,
                               ipw_write_packet_sent_callback, tty);
-       if (ret == -1) {
+       if (ret != 0) {
                mutex_unlock(&tty->ipw_tty_mutex);
                return 0;
        }
-- 
2.25.1