X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=sound%2Fsoc%2Ffsl%2Fmpc5200_dma.c;h=9ff62e3a9b1d1c49a2938c3085f7182d18d8ea44;hp=f0a2d407199815fcbfc0cc0b2b3483d91e7d85e8;hb=483e3cd6a34ad2d7e41100bc1b98614ac42a4567;hpb=22e93eddd9c63c61e5a38b82eea08f6095189e7f

diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index f0a2d4071998..9ff62e3a9b1d 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -69,6 +69,23 @@ static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
 
 static void psc_dma_bcom_enqueue_tx(struct psc_dma_stream *s)
 {
+	if (s->appl_ptr > s->runtime->control->appl_ptr) {
+		/*
+		 * In this case s->runtime->control->appl_ptr has wrapped around.
+		 * Play the data to the end of the boundary, then wrap our own
+		 * appl_ptr back around.
+		 */
+		while (s->appl_ptr < s->runtime->boundary) {
+			if (bcom_queue_full(s->bcom_task))
+				return;
+
+			s->appl_ptr += s->period_size;
+
+			psc_dma_bcom_enqueue_next_buffer(s);
+		}
+		s->appl_ptr -= s->runtime->boundary;
+	}
+
 	while (s->appl_ptr < s->runtime->control->appl_ptr) {
 
 		if (bcom_queue_full(s->bcom_task))