File 0035-pcm-Wrap-hw_ptr-to-boundary-in-pcm_ioplug.patch of Package alsa

From 688004a6acf7d1d568a660546816a092b6cc32ed Mon Sep 17 00:00:00 2001
From: "MONTANARO Luciano (MM)" <luciano.montanaro@magnetimarelli.com>
Date: Tue, 4 Mar 2014 12:51:36 +0100
Subject: [PATCH] pcm: Wrap hw_ptr to boundary in pcm_ioplug

The function snd_pcm_ioplug_hw_ptr_update() always increased the hw_ptr
by delta, without wrapping it to the boundary. This would lead to
problems when after many hours, the hw_ptr would overflow.

Signed-off-by: Luciano Montanaro <luciano.montanaro@magnetimarelli.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 src/pcm/pcm_ioplug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pcm/pcm_ioplug.c b/src/pcm/pcm_ioplug.c
index a90c844598bd..c1c3a9835d47 100644
--- a/src/pcm/pcm_ioplug.c
+++ b/src/pcm/pcm_ioplug.c
@@ -60,7 +60,7 @@ static void snd_pcm_ioplug_hw_ptr_update(snd_pcm_t *pcm)
 			delta = hw - io->last_hw;
 		else
 			delta = pcm->buffer_size + hw - io->last_hw;
-		io->data->hw_ptr += delta;
+		snd_pcm_mmap_hw_forward(io->data->pcm, delta);
 		io->last_hw = hw;
 	} else
 		io->data->state = SNDRV_PCM_STATE_XRUN;
-- 
1.9.0