2016-12-29 14:47:23

by Nikita Yushchenko

[permalink] [raw]
Subject: [PATCH] Revert "ASoC: core: replace aux_comp_list to component_dev_list"

This reverts commit 1a653aa44725668590b36bbe2d7fe4736a69f055 ("ASoC:
core: replace aux_comp_list to component_dev_list").

That commit tries to remove card->aux_comp_list, using flagged entries
in card->component_dev_list instead.

However, components are added to card->component_dev_list in
soc_probe_component(). Before that commit, it traversed
card->aux_comp_list and found aux devices added by soc_bind_aux_dev().
After that commit, it traverses card->component_dev_list and finds no
aux devices, because soc_probe_component() was not yet called for them.

Thus all aux devices are lost and any setup that needs them no longer
works.

Signed-off-by: Nikita Yushchenko <[email protected]>
---
include/sound/soc.h | 4 +++-
sound/soc/soc-core.c | 17 +++++------------
2 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 2b502f6cc6d0..8172a512632a 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -809,10 +809,10 @@ struct snd_soc_component {

unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */
unsigned int registered_as_component:1;
- unsigned int auxiliary:1; /* for auxiliary component of the card */
unsigned int suspended:1; /* is in suspend PM state */

struct list_head list;
+ struct list_head list_aux; /* for auxiliary component of the card */
struct list_head card_list;

struct snd_soc_dai_driver *dai_drv;
@@ -1152,6 +1152,7 @@ struct snd_soc_card {
*/
struct snd_soc_aux_dev *aux_dev;
int num_aux_devs;
+ struct list_head aux_comp_list;

const struct snd_kcontrol_new *controls;
int num_controls;
@@ -1547,6 +1548,7 @@ static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
INIT_LIST_HEAD(&card->widgets);
INIT_LIST_HEAD(&card->paths);
INIT_LIST_HEAD(&card->dapm_list);
+ INIT_LIST_HEAD(&card->aux_comp_list);
INIT_LIST_HEAD(&card->component_dev_list);
}

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index f1901bb1466e..15657a65e4ca 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1747,8 +1747,7 @@ static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
}

component->init = aux_dev->init;
- component->auxiliary = 1;
-
+ list_add(&component->list_aux, &card->aux_comp_list);
return 0;

err_defer:
@@ -1764,10 +1763,7 @@ static int soc_probe_aux_devices(struct snd_soc_card *card)

for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
order++) {
- list_for_each_entry(comp, &card->component_dev_list, card_list) {
- if (!comp->auxiliary)
- continue;
-
+ list_for_each_entry(comp, &card->aux_comp_list, list_aux) {
if (comp->driver->probe_order == order) {
ret = soc_probe_component(card, comp);
if (ret < 0) {
@@ -1791,14 +1787,11 @@ static void soc_remove_aux_devices(struct snd_soc_card *card)
for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
order++) {
list_for_each_entry_safe(comp, _comp,
- &card->component_dev_list, card_list) {
-
- if (!comp->auxiliary)
- continue;
-
+ &card->aux_comp_list, list_aux) {
if (comp->driver->remove_order == order) {
soc_remove_component(comp);
- comp->auxiliary = 0;
+ /* remove it from the card's aux_comp_list */
+ list_del(&comp->list_aux);
}
}
}
--
2.1.4