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| author | Tilman Schmidt <tilman@imap.cc> | 2010-09-30 13:34:51 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-01 00:33:33 -0700 |
| commit | f3d531b99fb30945b4a64d6e2e86e1e62605aca5 (patch) | |
| tree | 13d8bcd27aafec429be40f12a4e8f3d3ab6738da /drivers/isdn | |
| parent | c8701a08d6a4efeae45d84d0aa87172f23b14e3c (diff) | |
| download | linux-f3d531b99fb30945b4a64d6e2e86e1e62605aca5.tar.gz linux-f3d531b99fb30945b4a64d6e2e86e1e62605aca5.tar.bz2 linux-f3d531b99fb30945b4a64d6e2e86e1e62605aca5.zip | |
isdn/gigaset: correct bas_gigaset rx buffer handling
In transparent data reception, avoid a NULL pointer dereference
in case an skbuff cannot be allocated, remove an inappropriate
call to the HDLC flush routine, and correct the accounting of
received bytes for continued buffers.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
CC: stable <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
| -rw-r--r-- | drivers/isdn/gigaset/isocdata.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c index 2dfd346fc889..f39ccdf87a17 100644 --- a/drivers/isdn/gigaset/isocdata.c +++ b/drivers/isdn/gigaset/isocdata.c @@ -842,13 +842,14 @@ static inline void trans_receive(unsigned char *src, unsigned count, if (unlikely(bcs->ignore)) { bcs->ignore--; - hdlc_flush(bcs); return; } skb = bcs->rx_skb; - if (skb == NULL) + if (skb == NULL) { skb = gigaset_new_rx_skb(bcs); - bcs->hw.bas->goodbytes += skb->len; + if (skb == NULL) + return; + } dobytes = bcs->rx_bufsize - skb->len; while (count > 0) { dst = skb_put(skb, count < dobytes ? count : dobytes); @@ -860,6 +861,7 @@ static inline void trans_receive(unsigned char *src, unsigned count, if (dobytes == 0) { dump_bytes(DEBUG_STREAM_DUMP, "rcv data", skb->data, skb->len); + bcs->hw.bas->goodbytes += skb->len; gigaset_skb_rcvd(bcs, skb); skb = gigaset_new_rx_skb(bcs); if (skb == NULL) |