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authorDmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>2012-03-11 10:28:31 +0000
committerDavid S. Miller <davem@davemloft.net>2012-03-11 15:38:16 -0700
commit374458b3fe4288f820dbf3de0728e314d969f9e4 (patch)
tree5249fa436617d45cd2c3e5fad60732fc6d1a0e94 /net/caif/cfdgml.c
parente8abbe0d0236ac1d55d21fec7a8d2ee03e9d3258 (diff)
caif: Fix for a race in socket transmit with flow control.
Kill faulty checks on flow-off leading to connection drop at race conditions. caif_socket checks for flow-on before transmitting and goes to sleep or return -EAGAIN upon flow stop. Remove faulty subsequent checks on flow-off leading to connection drop. Also fix memory leaks on some of the errors paths. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/caif/cfdgml.c')
-rw-r--r--net/caif/cfdgml.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/caif/cfdgml.c b/net/caif/cfdgml.c
index 0f5ff27aa41c..a63f4a5f5aff 100644
--- a/net/caif/cfdgml.c
+++ b/net/caif/cfdgml.c
@@ -86,12 +86,17 @@ static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt)
struct caif_payload_info *info;
struct cfsrvl *service = container_obj(layr);
int ret;
- if (!cfsrvl_ready(service, &ret))
+
+ if (!cfsrvl_ready(service, &ret)) {
+ cfpkt_destroy(pkt);
return ret;
+ }
/* STE Modem cannot handle more than 1500 bytes datagrams */
- if (cfpkt_getlen(pkt) > DGM_MTU)
+ if (cfpkt_getlen(pkt) > DGM_MTU) {
+ cfpkt_destroy(pkt);
return -EMSGSIZE;
+ }
cfpkt_add_head(pkt, &zero, 3);
packet_type = 0x08; /* B9 set - UNCLASSIFIED */