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authorAndreas Eversberg <andreas@eversberg.eu>2009-05-22 11:04:47 +0000
committerDavid S. Miller <davem@davemloft.net>2009-05-25 00:51:32 -0700
commitba3af34ec9866dddac36c15947f867eb8e889bbc (patch)
tree21895b97b7ec004e39ad01d97a0fec83a657eab0
parent44e095897d745a03d71611fd318f26d8b12a4771 (diff)
mISDN: Fixed missing spin lock on pipeline process
Need to protect the complete pipeline. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/isdn/mISDN/dsp_core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c
index 1c49368e0a90..621ea9bc7c25 100644
--- a/drivers/isdn/mISDN/dsp_core.c
+++ b/drivers/isdn/mISDN/dsp_core.c
@@ -704,6 +704,8 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
break;
}
+ spin_lock_irqsave(&dsp_lock, flags);
+
/* decrypt if enabled */
if (dsp->bf_enable)
dsp_bf_decrypt(dsp, skb->data, skb->len);
@@ -741,11 +743,11 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
}
}
/* we need to process receive data if software */
- spin_lock_irqsave(&dsp_lock, flags);
if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) {
/* process data from card at cmx */
dsp_cmx_receive(dsp, skb);
}
+
spin_unlock_irqrestore(&dsp_lock, flags);
if (dsp->rx_disabled) {