netdev - [patch] 9p: fix min

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Message-ID: <20110115203539.GF2721@bicker>
Date:	Sat, 15 Jan 2011 23:35:39 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Eric Van Hensbergen <ericvh@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Sripathi Kodi <sripathik@...ibm.com>,
	Venkateswararao Jujjuri <jvrao@...ux.vnet.ibm.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] 9p: fix min_t() casting

The intent here was to cap the length to USHRT_MAX, but what the
code actually does is it just casts the return from strlen() to
unsigned short and truncates the significant bits away.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 1e308f2..0422581 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -403,7 +403,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
 				const char *sptr = va_arg(ap, const char *);
 				uint16_t len = 0;
 				if (sptr)
-					len = min_t(uint16_t, strlen(sptr),
+					len = min_t(size_t, strlen(sptr),
 								USHRT_MAX);
 
 				errcode = p9pdu_writef(pdu, proto_version,
--
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