This is a note to let you know that I've just added the patch titled
ASoC: soc-core: disable route checks for legacy devices
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-soc-core-disable-route-checks-for-legacy-devices.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a22ae72b86a4f754e8d25fbf9ea5a8f77365e531 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Date: Mon, 9 Mar 2020 14:27:43 -0500
Subject: ASoC: soc-core: disable route checks for legacy devices
From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
commit a22ae72b86a4f754e8d25fbf9ea5a8f77365e531 upstream.
v5.4 changes in soc-core tightened the checks on soc_dapm_add_routes,
which results in the ASoC card probe failing.
Introduce a flag to be set in machine drivers to prevent the probe
from stopping in case of incomplete topologies or missing routes. This
flag is for backwards compatibility only and shall not be used for
newer machine drivers.
Example with an HDaudio card with a bad topology:
[ 236.177898] skl_hda_dsp_generic skl_hda_dsp_generic: ASoC: Failed to
add route iDisp1_out -> direct -> iDisp1 Tx
[ 236.177902] skl_hda_dsp_generic skl_hda_dsp_generic:
snd_soc_bind_card: snd_soc_dapm_add_routes failed: -19
with the disable_route_checks set:
[ 64.031657] skl_hda_dsp_generic skl_hda_dsp_generic: ASoC: Failed to
add route iDisp1_out -> direct -> iDisp1 Tx
[ 64.031661] skl_hda_dsp_generic skl_hda_dsp_generic:
snd_soc_bind_card: disable_route_checks set, ignoring errors on
add_routes
Fixes: daa480bde6b3a9 ("ASoC: soc-core: tidyup for snd_soc_dapm_add_routes()")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200309192744.18380-2-pierre-louis.bossart@xxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/sound/soc.h | 1 +
sound/soc/soc-core.c | 28 ++++++++++++++++++++++++----
2 files changed, 25 insertions(+), 4 deletions(-)
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1059,6 +1059,7 @@ struct snd_soc_card {
const struct snd_soc_dapm_route *of_dapm_routes;
int num_of_dapm_routes;
bool fully_routed;
+ bool disable_route_checks;
/* lists of probed devices belonging to this card */
struct list_head component_dev_list;
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1076,8 +1076,18 @@ static int soc_probe_component(struct sn
ret = snd_soc_dapm_add_routes(dapm,
component->driver->dapm_routes,
component->driver->num_dapm_routes);
- if (ret < 0)
- goto err_probe;
+ if (ret < 0) {
+ if (card->disable_route_checks) {
+ dev_info(card->dev,
+ "%s: disable_route_checks set, ignoring errors on add_routes\n",
+ __func__);
+ } else {
+ dev_err(card->dev,
+ "%s: snd_soc_dapm_add_routes failed: %d\n",
+ __func__, ret);
+ goto err_probe;
+ }
+ }
/* see for_each_card_components */
list_add(&component->card_list, &card->component_dev_list);
@@ -2067,8 +2077,18 @@ static int snd_soc_instantiate_card(stru
ret = snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes,
card->num_dapm_routes);
- if (ret < 0)
- goto probe_end;
+ if (ret < 0) {
+ if (card->disable_route_checks) {
+ dev_info(card->dev,
+ "%s: disable_route_checks set, ignoring errors on add_routes\n",
+ __func__);
+ } else {
+ dev_err(card->dev,
+ "%s: snd_soc_dapm_add_routes failed: %d\n",
+ __func__, ret);
+ goto probe_end;
+ }
+ }
ret = snd_soc_dapm_add_routes(&card->dapm, card->of_dapm_routes,
card->num_of_dapm_routes);
Patches currently in stable-queue which might be from pierre-louis.bossart@xxxxxxxxxxxxxxx are
queue-5.4/asoc-soc-core-disable-route-checks-for-legacy-devices.patch
