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linux: add patch to fix audio on AMD APUs, thanks to 'Anssi' and 'anykey_'

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Signed-off-by: Stephan Raue <stephan@openelec.tv>
This commit is contained in:
Stephan Raue 2014-04-07 22:36:31 +02:00
parent 06c4810f80
commit d218b9d9b5
1 changed files with 54 additions and 0 deletions
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54
packages/linux/patches/3.14/linux-999.01-0001-ALSA-hda-Do-not-assign-streams-in-reverse-order.patch vendored Normal file
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@ -0,0 +1,54 @@
From b5e9423f4dfbef8da81217310c99cdcb79aaf25d Mon Sep 17 00:00:00 2001
From: Anssi Hannula <anssi.hannula@iki.fi>
Date: Mon, 7 Apr 2014 22:16:52 +0300
Subject: [PATCH] ALSA: hda - Do not assign streams in reverse order
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Currently stream numbers are assigned in reverse order.
Unfortunately commit 7546abfb8e1f9933b5 ("ALSA: hda - Increment
default stream numbers for AMD HDMI controllers") assumed this was not
the case (specifically, it had the "old cards had single device only"
=> "extra unused stream numbers do not matter" assumption), causing
non-working audio regressions for AMD Radeon HDMI users.
Change the stream numbers to be assigned in forward order.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77002
Reported-by: Christian Güdel <cg@dmesg.ch>
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Tested-by: Christian Güdel <cg@dmesg.ch>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: <stable@vger.kernel.org> # 3.14
---
sound/pci/hda/hda_intel.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index e354ab1ec20f..7a7b7b10dddf 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1856,13 +1856,14 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
struct azx_dev *azx_dev = &chip->azx_dev[dev];
dsp_lock(azx_dev);
if (!azx_dev->opened && !dsp_is_locked(azx_dev)) {
- res = azx_dev;
- if (res->assigned_key == key) {
- res->opened = 1;
- res->assigned_key = key;
+ if (azx_dev->assigned_key == key) {
+ azx_dev->opened = 1;
+ azx_dev->assigned_key = key;
dsp_unlock(azx_dev);
return azx_dev;
}
+ if (!res)
+ res = azx_dev;
}
dsp_unlock(azx_dev);
}
--
1.8.4.5