linux-kernel - [PATCH] ALSA: snd-usb: fix next_packet

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Message-Id: <1348734361-13352-1-git-send-email-zonque@gmail.com>
Date:	Thu, 27 Sep 2012 10:26:01 +0200
From:	Daniel Mack <zonque@...il.com>
To:	torvalds@...ux-foundation.org
Cc:	tiwai@...e.de, linux-kernel@...r.kernel.org,
	Daniel Mack <zonque@...il.com>, stable@...nel.org
Subject: [PATCH] ALSA: snd-usb: fix next_packet_size calls for pause case

Also fix the calls to next_packet_size() for the pause case. This was
missed in 245baf983 ("ALSA: snd-usb: fix calls to next_packet_size").

Signed-off-by: Daniel Mack <zonque@...il.com>
Reviewed-by: Takashi Iwai <tiwai@...e.de>
Reported-and-tested-by: Christian Tefzer <ctrefzer@....de>
Cc: stable@...nel.org
---
Hi Linus,

Takashi is currently on vacation and asked me to contact you directly
for merging this patch for 3.6. FWIW, it's also available here:

git://github.com/zonque/linux.git alsa-for-3.6

Thanks,
Daniel

 sound/usb/endpoint.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index a83a18d..d9de667 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -203,7 +203,13 @@ static void prepare_outbound_urb(struct snd_usb_endpoint *ep,
 			/* no data provider, so send silence */
 			unsigned int offs = 0;
 			for (i = 0; i < ctx->packets; ++i) {
-				int counts = ctx->packet_size[i];
+				int counts;
+
+				if (ctx->packet_size[i])
+					counts = ctx->packet_size[i];
+				else
+					counts = snd_usb_endpoint_next_packet_size(ep);
+
 				urb->iso_frame_desc[i].offset = offs * ep->stride;
 				urb->iso_frame_desc[i].length = counts * ep->stride;
 				offs += counts;
-- 
1.7.11.4

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