From: Tong Zhang <ztong0001@gmail.com>
To: jikos@kernel.org, dsterba@suse.com, gregkh@linuxfoundation.org,
jirislaby@kernel.org, ztong0001@gmail.com,
linux-kernel@vger.kernel.org
Subject: [PATCH v3] tty: ipwireless: fix error handling
Date: Fri, 21 Aug 2020 12:19:40 -0400 [thread overview]
Message-ID: <20200821161942.36589-1-ztong0001@gmail.com> (raw)
In-Reply-To: <20200821092844.GB2026@suse.cz>
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@gmail.com>
---
v2: - According to Jiri's comment, I made the checking consistent with
the rest of the kernel. I also rebased the code using f684668a24ec.
Thank you Jiri!
v3: fix commit log according to David's comment, and rebased using
Greg's tty-testing tree. Thank you David!
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..fe569f6294a2 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..23584769fc29 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
next prev parent reply other threads:[~2020-08-21 16:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-16 7:43 [PATCH] tty: ipwireless: fix error handling Tong Zhang
2020-08-18 8:35 ` Jiri Slaby
2020-08-18 16:03 ` [PATCH v2] " Tong Zhang
2020-08-21 9:28 ` David Sterba
2020-08-21 16:19 ` Tong Zhang [this message]
2020-08-21 16:20 ` Tong Zhang
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