Currently usrcnt is {in,de}cremented in .hw_{params,free} callbacks,
but .hw_free may be called multiple times without calling .hw_params.
this causes the usrcnt be decremented wrongly.

This patch allows .hw_{params,free} to be called only in pairs for
the same stream which balances the {in,de}crement of usrcnt.

Signed-off-by: Jiada Wang <jiada_w...@mentor.com>
Signed-off-by: Timo Wischer <twisc...@de.adit-jv.com>
---
 sound/soc/sh/rcar/core.c |  6 ++++--
 sound/soc/sh/rcar/rsnd.h | 24 ++++++++++++++++++++++--
 sound/soc/sh/rcar/ssi.c  |  8 ++++++--
 sound/soc/sh/rcar/ssiu.c |  3 ++-
 4 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index bda5b958d0dc..b9330bdadbd3 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -172,7 +172,8 @@ char *rsnd_mod_name(struct rsnd_mod *mod)
 
 u32 *rsnd_mod_get_status(struct rsnd_mod *mod,
                         struct rsnd_dai_stream *io,
-                        enum rsnd_mod_type type)
+                        enum rsnd_mod_type type,
+                        int flag)
 {
        return &mod->status;
 }
@@ -548,7 +549,8 @@ static int rsnd_status_update(u32 *status,
        enum rsnd_mod_type *types = rsnd_mod_sequence[is_play];         \
        for_each_rsnd_mod_arrays(i, mod, io, types, RSND_MOD_MAX) {     \
                int tmp = 0;                                            \
-               u32 *status = mod->ops->get_status(mod, io, types[i]);  \
+               u32 *status = mod->ops->get_status(mod, io, types[i],   \
+                                               __rsnd_mod_flag_##fn);  \
                int func_call = rsnd_status_update(status,              \
                                                __rsnd_mod_shift_##fn,  \
                                                __rsnd_mod_add_##fn,    \
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index ea6cbaa9743e..b4e3e9289f8a 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -238,6 +238,7 @@ enum rsnd_reg {
 #define SSI9_BUSIF_DALIGN(i)   (SSI9_BUSIF0_DALIGN + (i))
 #define SSI_SYS_STATUS(i)      (SSI_SYS_STATUS0 + (i))
 
+#define RSND_STATUS_ON_IO      BIT(0)
 
 struct rsnd_priv;
 struct rsnd_mod;
@@ -332,7 +333,8 @@ struct rsnd_mod_ops {
                       struct snd_pcm_substream *substream);
        u32 *(*get_status)(struct rsnd_mod *mod,
                           struct rsnd_dai_stream *io,
-                          enum rsnd_mod_type type);
+                          enum rsnd_mod_type type,
+                          int flag);
        int (*id)(struct rsnd_mod *mod);
        int (*id_sub)(struct rsnd_mod *mod);
        int (*id_cmd)(struct rsnd_mod *mod);
@@ -379,6 +381,22 @@ struct rsnd_mod {
 #define __rsnd_mod_shift_prepare       28 /* always called */
 #define __rsnd_mod_shift_cleanup       28 /* always called */
 
+#define __rsnd_mod_flag_init           0
+#define __rsnd_mod_flag_quit           0
+#define __rsnd_mod_flag_start          0
+#define __rsnd_mod_flag_stop           0
+#define __rsnd_mod_flag_hw_params      RSND_STATUS_ON_IO
+#define __rsnd_mod_flag_hw_free                RSND_STATUS_ON_IO
+#define __rsnd_mod_flag_probe          0
+#define __rsnd_mod_flag_remove         0
+#define __rsnd_mod_flag_irq            0
+#define __rsnd_mod_flag_pcm_new                0
+#define __rsnd_mod_flag_fallback       0
+#define __rsnd_mod_flag_pointer                0
+#define __rsnd_mod_flag_prepare                0
+#define __rsnd_mod_flag_cleanup                0
+#define __rsnd_mod_flag_set_fmt                0
+
 #define __rsnd_mod_add_probe           0
 #define __rsnd_mod_add_remove          0
 #define __rsnd_mod_add_prepare         0
@@ -428,7 +446,8 @@ void rsnd_mod_interrupt(struct rsnd_mod *mod,
                                         struct rsnd_dai_stream *io));
 u32 *rsnd_mod_get_status(struct rsnd_mod *mod,
                         struct rsnd_dai_stream *io,
-                        enum rsnd_mod_type type);
+                        enum rsnd_mod_type type,
+                        int flag);
 int rsnd_mod_id(struct rsnd_mod *mod);
 int rsnd_mod_id_raw(struct rsnd_mod *mod);
 int rsnd_mod_id_sub(struct rsnd_mod *mod);
@@ -496,6 +515,7 @@ struct rsnd_dai_stream {
        u32 converted_rate;      /* converted sampling rate */
        int converted_chan;      /* converted channels */
        u32 parent_ssi_status;
+       u32 status;
        u32 flags;
 };
 
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index f43937d2c588..89b4029b290b 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -681,7 +681,8 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
 
 static u32 *rsnd_ssi_get_status(struct rsnd_mod *mod,
                                struct rsnd_dai_stream *io,
-                               enum rsnd_mod_type type)
+                               enum rsnd_mod_type type,
+                               int flag)
 {
        /*
         * SSIP (= SSI parent) needs to be special, otherwise,
@@ -711,7 +712,10 @@ static u32 *rsnd_ssi_get_status(struct rsnd_mod *mod,
        if (type == RSND_MOD_SSIP)
                return &io->parent_ssi_status;
 
-       return rsnd_mod_get_status(mod, io, type);
+       if (flag && RSND_STATUS_ON_IO)
+               return &io->status;
+
+       return rsnd_mod_get_status(mod, io, type, flag);
 }
 
 /*
diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index f35d88211887..45e4cd84fbc4 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -47,7 +47,8 @@ static const int gen3_id[] = { 0, 8, 16, 24, 32, 40, 41, 42, 
43, 44 };
 
 static u32 *rsnd_ssiu_get_status(struct rsnd_mod *mod,
                                 struct rsnd_dai_stream *io,
-                                enum rsnd_mod_type type)
+                                enum rsnd_mod_type type,
+                                int flag)
 {
        struct rsnd_ssiu *ssiu = rsnd_mod_to_ssiu(mod);
        int busif = rsnd_mod_id_sub(mod);
-- 
2.19.2

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