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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2019-02-01 16:49:30 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-17 20:38:58 +0100
commitd9792606b604b972afebc89375e1ffad763135ac (patch)
treef569cdc0b3ffdf7f2f802b853787acd471c5bd2a /sound
parent1f8c097ed7fc36a8b8fba0f59ed47840b2e20db5 (diff)
ASoC: rsnd: fixup MIX kctrl registration
commit 7aea8a9d71d54f449f49e20324df06341cc18395 upstream. 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> Cc: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/sh/rcar/core.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index bb06dd72ca9a..f203c0878e69 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -1279,14 +1279,14 @@ int rsnd_kctrl_new(struct rsnd_mod *mod,
int ret;
/*
- * 1) Avoid duplicate register (ex. MIXer case)
- * 2) re-register if card was rebinded
+ * 1) Avoid duplicate register for DVC with MIX case
+ * 2) Allow duplicate register for MIX
+ * 3) re-register if card was rebinded
*/
list_for_each_entry(kctrl, &card->controls, list) {
struct rsnd_kctrl_cfg *c = kctrl->private_data;
- if (strcmp(kctrl->id.name, name) == 0 &&
- c->mod == mod)
+ if (c == cfg)
return 0;
}