remove 'pvt' member of dahdi_span

r8984 removed the member 'pvt' of struct dahdi_span in dahdi/kernel.h . No
use to have a pointer to a struct that is already embedded in our struct.

Thus we remove a single usage of it and replace it with container_of().

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/dahdi/wcopenpci.c b/drivers/dahdi/wcopenpci.c
index b28cac4..9e28279 100644
--- a/drivers/dahdi/wcopenpci.c
+++ b/drivers/dahdi/wcopenpci.c
@@ -1158,10 +1158,14 @@ static int openpci_open(struct dahdi_chan *chan)
 	return 0;
 }
 
+static inline struct openpci* openpci_from_span(struct dahdi_span *span) {
+	return container_of(span, struct openpci, span);
+}
+
 static int openpci_watchdog(struct dahdi_span *span, int event)
 {
 	info("TDM: Restarting DMA");
-	restart_dma(span->pvt);
+	restart_dma(openpci_from_span(span));
 	return 0;
 }
 
@@ -1321,7 +1325,6 @@ static int span_initialize(struct openpci *wc)
 	wc->span.watchdog = openpci_watchdog;
 	init_waitqueue_head(&wc->span.maintq);
 
-	wc->span.pvt = wc;
 	if (dahdi_register(&wc->span, 0)) {
 		cardcrit(wc->boardnum, "Unable to register span with dahdi");
 		return RET_FAIL;