wcte12xp: Set uncollected performance counters to -1.

The intent here is to flag to users that the maintenance counters are
not collected for spans exported by the wcte12xp driver.

dahdi_maint before this change:

  # dahdi_maint -s 1
  Span 1:
  >Framing Errors : 0:
  >CRC Errors : 0:
  >Code Violations : 0:
  >E-bit Count : 0:
  >General Errored Seconds : 0:

And after:

  # dahdi_maint -s 1
  Span 1:
  >Framing Errors : -1:
  >CRC Errors : -1:
  >Code Violations : -1:
  >E-bit Count : -1:
  >General Errored Seconds : -1:

This can be combined with a change to dahdi_maint to recognize that the
errors are -1 and print an even more explicit warning.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@10212 a0bf4364-ded3-4de4-8d8a-66a801d63aff

drivers/dahdi/wcte12xp/base.c

@@ -2565,6 +2565,10 @@ static int __devinit te12xp_init_one(struct pci_dev *pdev, const struct pci_devi
 	if (!wc)
 		return -ENOMEM;
 
+	/* Set the performance counters to -1 since this card currently does
+	 * not support collecting them. */
+	memset(&wc->span.count, -1, sizeof(wc->span.count));
+
 	wc->not_ready = 1;
 
 	ifaces[index] = wc;