RDMA/cxgb4: Increase epd buff size for debug interface

IPv6 address string lengths require increasing the buffer size for
debugfs handlers.

Signed-off-by: Pramod Kumar <pramod@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 72f1f05..eb5df4e 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -670,7 +670,7 @@
 	idr_for_each(&epd->devp->stid_idr, count_idrs, &count);
 	spin_unlock_irq(&epd->devp->lock);
 
-	epd->bufsize = count * 160;
+	epd->bufsize = count * 240;
 	epd->buf = vmalloc(epd->bufsize);
 	if (!epd->buf) {
 		ret = -ENOMEM;