This is a note to let you know that I've just added the patch titled
tty: ipwireless: fix error handling
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tty-ipwireless-fix-error-handling.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b6f5768b5e54468cb3e4e67cc2ec44e4d2adc703
Author: Tong Zhang <ztong0001@xxxxxxxxx>
Date: Fri Aug 21 12:19:40 2020 -0400
tty: ipwireless: fix error handling
[ Upstream commit db332356222d9429731ab9395c89cca403828460 ]
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 <ztong0001@xxxxxxxxx>
Acked-by: David Sterba <dsterba@xxxxxxxx>
Link: https://lore.kernel.org/r/20200821161942.36589-1-ztong0001@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/ipwireless/network.c b/drivers/tty/ipwireless/network.c
index c0dfb642383b2..dc7f4eb18e0a7 100644
--- a/drivers/tty/ipwireless/network.c
+++ b/drivers/tty/ipwireless/network.c
@@ -116,7 +116,7 @@ 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;
}
@@ -133,7 +133,7 @@ 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 345cebb07ae79..0b06b1847450f 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -217,7 +217,7 @@ 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;
}
