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-rw-r--r--drivers/isdn/hardware/avm/c4.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/avm/c4.c b/drivers/isdn/hardware/avm/c4.c
index 8710cf6214d..4bbbbe68807 100644
--- a/drivers/isdn/hardware/avm/c4.c
+++ b/drivers/isdn/hardware/avm/c4.c
@@ -678,7 +678,9 @@ static irqreturn_t c4_handle_interrupt(avmcard *card)
for (i=0; i < card->nr_controllers; i++) {
avmctrl_info *cinfo = &card->ctrlinfo[i];
memset(cinfo->version, 0, sizeof(cinfo->version));
+ spin_lock_irqsave(&card->lock, flags);
capilib_release(&cinfo->ncci_head);
+ spin_unlock_irqrestore(&card->lock, flags);
capi_ctr_reseted(&cinfo->capi_ctrl);
}
card->nlogcontr = 0;