diff options
-rw-r--r-- | zaptel.c | 21 |
1 files changed, 13 insertions, 8 deletions
@@ -1070,7 +1070,8 @@ static void close_channel(struct zt_chan *chan) kfree(rxgain); if (ec) echo_can_free(ec); - kfree(readchunkpreec); + if (readchunkpreec) + kfree(readchunkpreec); #ifdef CONFIG_ZAPATA_PPP if (ppp) { @@ -3993,13 +3994,17 @@ static int zt_chanandpseudo_ioctl(struct inode *inode, struct file *file, unsign chans[i]->_confn = zt_get_conf_alias(stack.conf.confno); } - if ((stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITOR_RX_PREECHO || - (stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITOR_TX_PREECHO || - (stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITORBOTH_PREECHO) - chans[stack.conf.confno]->readchunkpreec = kmalloc(sizeof(*chans[stack.conf.confno]->readchunkpreec) * ZT_CHUNKSIZE, GFP_KERNEL); - else { - kfree(chans[stack.conf.confno]->readchunkpreec); - chans[stack.conf.confno]->readchunkpreec = NULL; + if (chans[stack.conf.confno]) { + if ((stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITOR_RX_PREECHO || + (stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITOR_TX_PREECHO || + (stack.conf.confmode & ZT_CONF_MODE_MASK) == ZT_CONF_MONITORBOTH_PREECHO) + chans[stack.conf.confno]->readchunkpreec = kmalloc(sizeof(*chans[stack.conf.confno]->readchunkpreec) * ZT_CHUNKSIZE, GFP_KERNEL); + else { + if (chans[stack.conf.confno]->readchunkpreec) { + kfree(chans[stack.conf.confno]->readchunkpreec); + chans[stack.conf.confno]->readchunkpreec = NULL; + } + } } spin_unlock_irqrestore(&chan->lock, flags); |