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ASoC: rsnd: fixup MIX kctrl registration
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Fri, 1 Feb 2019 07:49:30 +0000 (16:49 +0900)
committerMark Brown <broonie@kernel.org>
Sat, 2 Feb 2019 15:41:29 +0000 (15:41 +0000)
commit7aea8a9d71d54f449f49e20324df06341cc18395
tree7af6a24dd84a90576bdadb24ec7feae06615f964
parentd0b95e6cd298a785c126e75a085af6dd7b7b1f60
ASoC: rsnd: fixup MIX kctrl registration

Renesas sound device has many IPs and many situations.
If platform/board uses MIXer, situation will be more complex.
To avoid duplicate DVC kctrl registration when MIXer was used,
it had original flags.
But it was issue when sound card was re-binded, because
no one can't cleanup this flags then.

To solve this issue, commit 9c698e8481a15237a ("ASoC: rsnd: tidyup
registering method for rsnd_kctrl_new()") checks registered
card->controls, because if card was re-binded, these were cleanuped
automatically. This patch could solve re-binding issue.
But, it start to avoid MIX kctrl.

To solve these issues, we need below.
To avoid card re-binding issue: check registered card->controls
To avoid duplicate DVC registration: check registered rsnd_kctrl_cfg
To allow multiple MIX registration: check registered rsnd_kctrl_cfg
This patch do it.

Fixes: 9c698e8481a15237a ("ASoC: rsnd: tidyup registering method for rsnd_kctrl_new()")
Reported-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-By: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/sh/rcar/core.c