diff options
| -rwxr-xr-x | zaptel.c | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -2754,10 +2754,18 @@ static int zt_common_ioctl(struct inode *node, struct file *file, unsigned int c unsigned long flags; #endif int i,j; + int return_master = 0; switch(cmd) { case ZT_GET_PARAMS: /* get channel timing parameters */ copy_from_user(&stack.param,(struct zt_params *)data,sizeof(stack.param)); + + /* check to see if the caller wants to receive our master channel number */ + if (stack.param.channo & 0x40000000) { + return_master = 1; + stack.param.channo &= ~0x40000000; + } + /* Pick the right channo's */ if (!stack.param.channo || unit) { stack.param.channo = unit; @@ -2766,7 +2774,11 @@ static int zt_common_ioctl(struct inode *node, struct file *file, unsigned int c VALID_CHANNEL(stack.param.channo); chan = chans[stack.param.channo]; - /* point to relevant structure */ + /* if requested, put the master channel number in the top 16 bits of the result */ + if (return_master) + stack.param.channo |= chan->master->channo << 16; + + /* point to relevant structure */ stack.param.sigtype = chan->sig; /* get signalling type */ /* return non-zero if rx not in idle state */ if (chan->span) { |