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authorLinus Torvalds <torvalds@linux-foundation.org>2010-11-19 15:25:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-19 15:25:59 -0800
commitcaf8394524fdc039b090cd3af99157e9e76f4f06 (patch)
treec58af82b15459a55a66bfae3a9d83a23c2d2c62c /net/irda/irttp.c
parent6656b3fc8aba2eb7ca00c06c7fe4917938b0b652 (diff)
parent0302b8622ce696af1cda22fcf207d3793350e896 (diff)
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits) net: fix kernel-doc for sk_filter_rcu_release be2net: Fix to avoid firmware update when interface is not open. netfilter: fix IP_VS dependencies net: irda: irttp: sync error paths of data- and udata-requests ipv6: Expose reachable and retrans timer values as msecs ipv6: Expose IFLA_PROTINFO timer values in msecs instead of jiffies 3c59x: fix build failure on !CONFIG_PCI ipg.c: remove id [SUNDANCE, 0x1021] net: caif: spi: fix potential NULL dereference ath9k_htc: Avoid setting QoS control for non-QoS frames net: zero kobject in rx_queue_release net: Fix duplicate volatile warning. MAINTAINERS: Add stmmac maintainer bonding: fix a race in IGMP handling cfg80211: fix can_beacon_sec_chan, reenable HT40 gianfar: fix signedness issue net: bnx2x: fix error value sign 8139cp: fix checksum broken r8169: fix checksum broken rds: Integer overflow in RDS cmsg handling ...
Diffstat (limited to 'net/irda/irttp.c')
-rw-r--r--net/irda/irttp.c30
1 files changed, 22 insertions, 8 deletions
diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index 285761e77d9..f6054f9ccbe 100644
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -550,22 +550,30 @@ EXPORT_SYMBOL(irttp_close_tsap);
*/
int irttp_udata_request(struct tsap_cb *self, struct sk_buff *skb)
{
+ int ret;
+
IRDA_ASSERT(self != NULL, return -1;);
IRDA_ASSERT(self->magic == TTP_TSAP_MAGIC, return -1;);
IRDA_ASSERT(skb != NULL, return -1;);
IRDA_DEBUG(4, "%s()\n", __func__);
+ /* Take shortcut on zero byte packets */
+ if (skb->len == 0) {
+ ret = 0;
+ goto err;
+ }
+
/* Check that nothing bad happens */
- if ((skb->len == 0) || (!self->connected)) {
- IRDA_DEBUG(1, "%s(), No data, or not connected\n",
- __func__);
+ if (!self->connected) {
+ IRDA_WARNING("%s(), Not connected\n", __func__);
+ ret = -ENOTCONN;
goto err;
}
if (skb->len > self->max_seg_size) {
- IRDA_DEBUG(1, "%s(), UData is too large for IrLAP!\n",
- __func__);
+ IRDA_ERROR("%s(), UData is too large for IrLAP!\n", __func__);
+ ret = -EMSGSIZE;
goto err;
}
@@ -576,7 +584,7 @@ int irttp_udata_request(struct tsap_cb *self, struct sk_buff *skb)
err:
dev_kfree_skb(skb);
- return -1;
+ return ret;
}
EXPORT_SYMBOL(irttp_udata_request);
@@ -599,9 +607,15 @@ int irttp_data_request(struct tsap_cb *self, struct sk_buff *skb)
IRDA_DEBUG(2, "%s() : queue len = %d\n", __func__,
skb_queue_len(&self->tx_queue));
+ /* Take shortcut on zero byte packets */
+ if (skb->len == 0) {
+ ret = 0;
+ goto err;
+ }
+
/* Check that nothing bad happens */
- if ((skb->len == 0) || (!self->connected)) {
- IRDA_WARNING("%s: No data, or not connected\n", __func__);
+ if (!self->connected) {
+ IRDA_WARNING("%s: Not connected\n", __func__);
ret = -ENOTCONN;
goto err;
}