This is a note to let you know that I've just added the patch titled
ALSA: snd-usb-caiaq: Correct offset fields of outbound iso_frame_desc
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
alsa-snd-usb-caiaq-correct-offset-fields-of-outbound.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From 15439bde3af7ff88459ea2b5520b77312e958df2 Mon Sep 17 00:00:00 2001
From: Daniel Mack <[email protected]>
Date: Fri, 5 Aug 2011 13:49:52 +0200
Subject: ALSA: snd-usb-caiaq: Correct offset fields of outbound iso_frame_desc
From: Daniel Mack <[email protected]>
commit 15439bde3af7ff88459ea2b5520b77312e958df2 upstream.
This fixes faulty outbount packets in case the inbound packets
received from the hardware are fragmented and contain bogus input
iso frames. The bug has been there for ages, but for some strange
reasons, it was only triggered by newer machines in 64bit mode.
Signed-off-by: Daniel Mack <[email protected]>
Reported-and-tested-by: William Light <[email protected]>
Reported-by: Pedro Ribeiro <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
sound/usb/caiaq/audio.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -468,6 +468,7 @@ static void read_completed(struct urb *u
struct snd_usb_caiaqdev *dev;
struct urb *out;
int frame, len, send_it = 0, outframe = 0;
+ size_t offset = 0;
if (urb->status || !info)
return;
@@ -488,7 +489,8 @@ static void read_completed(struct urb *u
len = urb->iso_frame_desc[outframe].actual_length;
out->iso_frame_desc[outframe].length = len;
out->iso_frame_desc[outframe].actual_length = 0;
- out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
+ out->iso_frame_desc[outframe].offset = offset;
+ offset += len;
if (len > 0) {
spin_lock(&dev->spinlock);
@@ -504,7 +506,7 @@ static void read_completed(struct urb *u
}
if (send_it) {
- out->number_of_packets = FRAMES_PER_URB;
+ out->number_of_packets = outframe;
out->transfer_flags = URB_ISO_ASAP;
usb_submit_urb(out, GFP_ATOMIC);
}
Patches currently in longterm-queue-2.6.32 which might be from [email protected]
are
/home/gregkh/linux/longterm/longterm-queue-2.6.32/queue-2.6.32/alsa-snd-usb-caiaq-correct-offset-fields-of-outbound.patch
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