Messages in this thread Patch in this message | | | Subject | [mISDN PATCH v2 04/19] Fixed missing spin lock on pipeline process | From | Karsten Keil <> | Date | Fri, 22 May 2009 23:04:47 +0200 |
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From: Andreas Eversberg <andreas@eversberg.eu>
Need to protect the complete pipeline.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> --- drivers/isdn/mISDN/dsp_core.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c index 1c49368..621ea9b 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) { -- 1.6.0.2
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