From: Latchesar Ionkov <lucho@ionkov.net>
Date: Wed, 11 Jul 2007 21:14:46 +0000 (-0600)
Subject: net/9p: set error to EREMOTEIO if trans->write returns zero
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=1d6b5602381524c339af2c2fdfe42ad0a01464a4;p=openwrt%2Fstaging%2Fblogic.git

net/9p: set error to EREMOTEIO if trans->write returns zero

If trans->write returns 0, p9_write_work goes through the error path, but
sets the error code to zero.

This patch sets the error code to EREMOTEIO if trans->write returns zero
value.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
---

diff --git a/net/9p/mux.c b/net/9p/mux.c
index c3aa87bc8b97..acb038810f39 100644
--- a/net/9p/mux.c
+++ b/net/9p/mux.c
@@ -505,8 +505,12 @@ again:
 		return;
 	}
 
-	if (err <= 0)
+	if (err < 0)
+		goto error;
+	else if (err == 0) {
+		err = -EREMOTEIO;
 		goto error;
+	}
 
 	m->wpos += err;
 	if (m->wpos == m->wsize)