Merge series "ASoC: rsnd: cleanup ppcheck warning for Renesas sound driver"...

Merge series "ASoC: rsnd: cleanup ppcheck warning for Renesas sound driver" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:

Hi Mark, Pierre-Louis

These patches are based on below patch-set which from Pierre-Louis,
and cleanup cppcheck warnings for Rensas sound driver.
[3/5] has Reported-by Pierre-Louis tag.

	Subject: [PATCH 0/8] ASoC: sh: remove cppcheck warnings
	Date: Fri, 19 Feb 2021 17:16:27 -0600

Kuninori Morimoto (5):
  ASoC: rsnd: cleanup ppcheck warning for ssiu.c
  ASoC: rsnd: cleanup ppcheck warning for ssi.c
  ASoC: rsnd: cleanup ppcheck warning for core.c
  ASoC: rsnd: cleanup ppcheck warning for cmd.c
  ASoC: rsnd: cleanup ppcheck warning for adg.c

 sound/soc/sh/rcar/adg.c  | 15 +++++++-------
 sound/soc/sh/rcar/cmd.c  | 15 +++++++-------
 sound/soc/sh/rcar/core.c | 32 +++++++++++++---------------
 sound/soc/sh/rcar/ssi.c  | 45 ++++++++++++++++++++--------------------
 sound/soc/sh/rcar/ssiu.c | 22 +++++++++++---------
 5 files changed, 64 insertions(+), 65 deletions(-)

--
2.25.1

sound/soc/sh/rcar/adg.c

@@ -64,13 +64,13 @@ static const char * const clk_name[] = {
 
 static u32 rsnd_adg_calculate_rbgx(unsigned long div)
 {
-	int i, ratio;
+	int i;
 
 	if (!div)
 		return 0;
 
 	for (i = 3; i >= 0; i--) {
-		ratio = 2 << (i * 2);
+		int ratio = 2 << (i * 2);
 		if (0 == (div % ratio))
 			return (u32)((i << 8) | ((div / ratio) - 1));
 	}
@@ -111,7 +111,7 @@ static void __rsnd_adg_get_timesel_ratio(struct rsnd_priv *priv,
 {
 	struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
 	struct device *dev = rsnd_priv_to_dev(priv);
-	int idx, sel, div, step;
+	int sel;
 	unsigned int val, en;
 	unsigned int min, diff;
 	unsigned int sel_rate[] = {
@@ -126,8 +126,9 @@ static void __rsnd_adg_get_timesel_ratio(struct rsnd_priv *priv,
 	val = 0;
 	en = 0;
 	for (sel = 0; sel < ARRAY_SIZE(sel_rate); sel++) {
-		idx = 0;
-		step = 2;
+		int idx = 0;
+		int step = 2;
+		int div;
 
 		if (!sel_rate[sel])
 			continue;
@@ -394,11 +395,11 @@ static void rsnd_adg_get_clkin(struct rsnd_priv *priv,
 			       struct rsnd_adg *adg)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
-	struct clk *clk;
 	int i;
 
 	for (i = 0; i < CLKMAX; i++) {
-		clk = devm_clk_get(dev, clk_name[i]);
+		struct clk *clk = devm_clk_get(dev, clk_name[i]);
+
 		adg->clk[i] = IS_ERR(clk) ? NULL : clk;
 	}
 }

sound/soc/sh/rcar/cmd.c

@@ -43,8 +43,6 @@ static int rsnd_cmd_init(struct rsnd_mod *mod,
 
 	if (mix) {
 		struct rsnd_dai *rdai;
-		struct rsnd_mod *src;
-		struct rsnd_dai_stream *tio;
 		int i;
 
 		/*
@@ -54,8 +52,9 @@ static int rsnd_cmd_init(struct rsnd_mod *mod,
 		 */
 		data = 0;
 		for_each_rsnd_dai(rdai, priv, i) {
-			tio = &rdai->playback;
-			src = rsnd_io_to_mod_src(tio);
+			struct rsnd_dai_stream *tio = &rdai->playback;
+			struct rsnd_mod *src = rsnd_io_to_mod_src(tio);
+
 			if (mix == rsnd_io_to_mod_mix(tio))
 				data |= path[rsnd_mod_id(src)];
 
@@ -142,7 +141,7 @@ int rsnd_cmd_probe(struct rsnd_priv *priv)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct rsnd_cmd *cmd;
-	int i, nr, ret;
+	int i, nr;
 
 	/* This driver doesn't support Gen1 at this point */
 	if (rsnd_is_gen1(priv))
@@ -161,7 +160,7 @@ int rsnd_cmd_probe(struct rsnd_priv *priv)
 	priv->cmd	= cmd;
 
 	for_each_rsnd_cmd(cmd, priv, i) {
-		ret = rsnd_mod_init(priv, rsnd_mod_get(cmd),
+		int ret = rsnd_mod_init(priv, rsnd_mod_get(cmd),
 					&rsnd_cmd_ops, NULL,
 					RSND_MOD_CMD, i);
 		if (ret)

sound/soc/sh/rcar/core.c

@@ -230,12 +230,12 @@ void rsnd_mod_interrupt(struct rsnd_mod *mod,
 					 struct rsnd_dai_stream *io))
 {
 	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct rsnd_dai_stream *io;
 	struct rsnd_dai *rdai;
 	int i;
 
 	for_each_rsnd_dai(rdai, priv, i) {
-		io = &rdai->playback;
+		struct rsnd_dai_stream *io = &rdai->playback;
+
 		if (mod == io->mod[mod->type])
 			callback(mod, io);
 
@@ -486,13 +486,12 @@ struct rsnd_mod *rsnd_mod_next(int *iterator,
 			       enum rsnd_mod_type *array,
 			       int array_size)
 {
-	struct rsnd_mod *mod;
-	enum rsnd_mod_type type;
 	int max = array ? array_size : RSND_MOD_MAX;
 
 	for (; *iterator < max; (*iterator)++) {
-		type = (array) ? array[*iterator] : *iterator;
-		mod = rsnd_io_to_mod(io, type);
+		enum rsnd_mod_type type = (array) ? array[*iterator] : *iterator;
+		struct rsnd_mod *mod = rsnd_io_to_mod(io, type);
+
 		if (mod)
 			return mod;
 	}
@@ -1061,7 +1060,7 @@ static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
 	struct device_node *ssiu_np = rsnd_ssiu_of_node(priv);
 	struct device_node *np;
 	int is_play = rsnd_io_is_play(io);
-	int i, j;
+	int i;
 
 	if (!ssiu_np)
 		return;
@@ -1078,13 +1077,11 @@ static void rsnd_parse_tdm_split_mode(struct rsnd_priv *priv,
 		if (!node)
 			break;
 
-		j = 0;
 		for_each_child_of_node(ssiu_np, np) {
 			if (np == node) {
 				rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT);
 				dev_dbg(dev, "%s is part of TDM Split\n", io->name);
 			}
-			j++;
 		}
 
 		of_node_put(node);
@@ -1140,7 +1137,6 @@ void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 {
 	struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 	struct device_node *np;
-	struct rsnd_mod *mod;
 	int i;
 
 	if (!node)
@@ -1148,7 +1144,8 @@ void rsnd_parse_connect_common(struct rsnd_dai *rdai,
 
 	i = 0;
 	for_each_child_of_node(node, np) {
-		mod = mod_get(priv, i);
+		struct rsnd_mod *mod = mod_get(priv, i);
+
 		if (np == playback)
 			rsnd_dai_connect(mod, &rdai->playback, mod->type);
 		if (np == capture)
@@ -1258,7 +1255,6 @@ static void __rsnd_dai_probe(struct rsnd_priv *priv,
 			     struct device_node *dai_np,
 			     int dai_i)
 {
-	struct device_node *playback, *capture;
 	struct rsnd_dai_stream *io_playback;
 	struct rsnd_dai_stream *io_capture;
 	struct snd_soc_dai_driver *drv;
@@ -1301,8 +1297,8 @@ static void __rsnd_dai_probe(struct rsnd_priv *priv,
 	rsnd_rdai_width_set(rdai, 32);   /* default 32bit width */
 
 	for (io_i = 0;; io_i++) {
-		playback = of_parse_phandle(dai_np, "playback", io_i);
-		capture  = of_parse_phandle(dai_np, "capture", io_i);
+		struct device_node *playback = of_parse_phandle(dai_np, "playback", io_i);
+		struct device_node *capture  = of_parse_phandle(dai_np, "capture", io_i);
 
 		if (!playback && !capture)
 			break;
@@ -1366,7 +1362,7 @@ static int rsnd_dai_probe(struct rsnd_priv *priv)
 		for_each_endpoint_of_node(dai_node, dai_np) {
 			__rsnd_dai_probe(priv, dai_np, dai_i);
 			if (rsnd_is_gen3(priv)) {
-				struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
+				rdai = rsnd_rdai_get(priv, dai_i);
 
 				rsnd_parse_connect_graph(priv, &rdai->playback, dai_np);
 				rsnd_parse_connect_graph(priv, &rdai->capture,  dai_np);
@@ -1377,7 +1373,7 @@ static int rsnd_dai_probe(struct rsnd_priv *priv)
 		for_each_child_of_node(dai_node, dai_np) {
 			__rsnd_dai_probe(priv, dai_np, dai_i);
 			if (rsnd_is_gen3(priv)) {
-				struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i);
+				rdai = rsnd_rdai_get(priv, dai_i);
 
 				rsnd_parse_connect_simple(priv, &rdai->playback, dai_np);
 				rsnd_parse_connect_simple(priv, &rdai->capture,  dai_np);
@@ -1416,11 +1412,11 @@ static int rsnd_hw_params(struct snd_soc_component *component,
 		struct rsnd_priv *priv = rsnd_io_to_priv(io);
 		struct device *dev = rsnd_priv_to_dev(priv);
 		struct snd_soc_dpcm *dpcm;
-		struct snd_pcm_hw_params *be_params;
 		int stream = substream->stream;
 
 		for_each_dpcm_be(fe, stream, dpcm) {
-			be_params = &dpcm->hw_params;
+			struct snd_pcm_hw_params *be_params = &dpcm->hw_params;
+
 			if (params_channels(hw_params) != params_channels(be_params))
 				io->converted_chan = params_channels(be_params);
 			if (params_rate(hw_params) != params_rate(be_params))

sound/soc/sh/rcar/ssi.c

@@ -24,23 +24,23 @@
 /*
  * SSICR
  */
-#define	FORCE		(1 << 31)	/* Fixed */
-#define	DMEN		(1 << 28)	/* DMA Enable */
-#define	UIEN		(1 << 27)	/* Underflow Interrupt Enable */
-#define	OIEN		(1 << 26)	/* Overflow Interrupt Enable */
-#define	IIEN		(1 << 25)	/* Idle Mode Interrupt Enable */
-#define	DIEN		(1 << 24)	/* Data Interrupt Enable */
-#define	CHNL_4		(1 << 22)	/* Channels */
-#define	CHNL_6		(2 << 22)	/* Channels */
-#define	CHNL_8		(3 << 22)	/* Channels */
-#define DWL_MASK	(7 << 19)	/* Data Word Length mask */
-#define	DWL_8		(0 << 19)	/* Data Word Length */
-#define	DWL_16		(1 << 19)	/* Data Word Length */
-#define	DWL_18		(2 << 19)	/* Data Word Length */
-#define	DWL_20		(3 << 19)	/* Data Word Length */
-#define	DWL_22		(4 << 19)	/* Data Word Length */
-#define	DWL_24		(5 << 19)	/* Data Word Length */
-#define	DWL_32		(6 << 19)	/* Data Word Length */
+#define	FORCE		(1u << 31)	/* Fixed */
+#define	DMEN		(1u << 28)	/* DMA Enable */
+#define	UIEN		(1u << 27)	/* Underflow Interrupt Enable */
+#define	OIEN		(1u << 26)	/* Overflow Interrupt Enable */
+#define	IIEN		(1u << 25)	/* Idle Mode Interrupt Enable */
+#define	DIEN		(1u << 24)	/* Data Interrupt Enable */
+#define	CHNL_4		(1u << 22)	/* Channels */
+#define	CHNL_6		(2u << 22)	/* Channels */
+#define	CHNL_8		(3u << 22)	/* Channels */
+#define DWL_MASK	(7u << 19)	/* Data Word Length mask */
+#define	DWL_8		(0u << 19)	/* Data Word Length */
+#define	DWL_16		(1u << 19)	/* Data Word Length */
+#define	DWL_18		(2u << 19)	/* Data Word Length */
+#define	DWL_20		(3u << 19)	/* Data Word Length */
+#define	DWL_22		(4u << 19)	/* Data Word Length */
+#define	DWL_24		(5u << 19)	/* Data Word Length */
+#define	DWL_32		(6u << 19)	/* Data Word Length */
 
 /*
  * System word length
@@ -167,7 +167,6 @@ static void rsnd_ssi_status_check(struct rsnd_mod *mod,
 
 static u32 rsnd_ssi_multi_secondaries(struct rsnd_dai_stream *io)
 {
-	struct rsnd_mod *mod;
 	enum rsnd_mod_type types[] = {
 		RSND_MOD_SSIM1,
 		RSND_MOD_SSIM2,
@@ -177,7 +176,8 @@ static u32 rsnd_ssi_multi_secondaries(struct rsnd_dai_stream *io)
 
 	mask = 0;
 	for (i = 0; i < ARRAY_SIZE(types); i++) {
-		mod = rsnd_io_to_mod(io, types[i]);
+		struct rsnd_mod *mod = rsnd_io_to_mod(io, types[i]);
+
 		if (!mod)
 			continue;
 
@@ -532,7 +532,6 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod,
 	struct device *dev = rsnd_priv_to_dev(priv);
 	int is_tdm, is_tdm_split;
 	int id = rsnd_mod_id(mod);
-	int i;
 	u32 sys_int_enable = 0;
 
 	is_tdm		= rsnd_runtime_is_tdm(io);
@@ -560,6 +559,8 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod,
 
 	/* disable busif buffer over/under run interrupt. */
 	if (is_tdm || is_tdm_split) {
+		int i;
+
 		switch (id) {
 		case 0:
 		case 1:
@@ -1209,7 +1210,6 @@ void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
 	struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 	struct device_node *node;
 	struct device_node *np;
-	struct rsnd_mod *mod;
 	int i;
 
 	node = rsnd_ssi_of_node(priv);
@@ -1218,7 +1218,8 @@ void rsnd_parse_connect_ssi(struct rsnd_dai *rdai,
 
 	i = 0;
 	for_each_child_of_node(node, np) {
-		mod = rsnd_ssi_mod_get(priv, i);
+		struct rsnd_mod *mod = rsnd_ssi_mod_get(priv, i);
+
 		if (np == playback)
 			rsnd_ssi_connect(mod, &rdai->playback);
 		if (np == capture)

sound/soc/sh/rcar/ssiu.c

@@ -209,7 +209,7 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
 		struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
 		struct rsnd_mod *pos;
 		u32 val;
-		int i, shift;
+		int i;
 
 		i = rsnd_mod_id(ssi_mod);
 
@@ -221,7 +221,8 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
 			i;
 
 		for_each_rsnd_mod_array(i, pos, io, rsnd_ssi_array) {
-			shift	= (i * 4) + 20;
+			int shift = (i * 4) + 20;
+
 			val	= (val & ~(0xF << shift)) |
 				rsnd_mod_id(pos) << shift;
 		}
@@ -334,7 +335,6 @@ static void rsnd_parse_connect_ssiu_compatible(struct rsnd_priv *priv,
 					       struct rsnd_dai_stream *io)
 {
 	struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
-	struct rsnd_mod *mod;
 	struct rsnd_ssiu *ssiu;
 	int i;
 
@@ -343,7 +343,7 @@ static void rsnd_parse_connect_ssiu_compatible(struct rsnd_priv *priv,
 
 	/* select BUSIF0 */
 	for_each_rsnd_ssiu(ssiu, priv, i) {
-		mod = rsnd_mod_get(ssiu);
+		struct rsnd_mod *mod = rsnd_mod_get(ssiu);
 
 		if ((rsnd_mod_id(ssi_mod) == rsnd_mod_id(mod)) &&
 		    (rsnd_mod_id_sub(mod) == 0)) {
@@ -359,17 +359,17 @@ void rsnd_parse_connect_ssiu(struct rsnd_dai *rdai,
 {
 	struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai);
 	struct device_node *node = rsnd_ssiu_of_node(priv);
-	struct device_node *np;
-	struct rsnd_mod *mod;
 	struct rsnd_dai_stream *io_p = &rdai->playback;
 	struct rsnd_dai_stream *io_c = &rdai->capture;
-	int i;
 
 	/* use rcar_sound,ssiu if exist */
 	if (node) {
-		i = 0;
+		struct device_node *np;
+		int i = 0;
+
 		for_each_child_of_node(node, np) {
-			mod = rsnd_ssiu_mod_get(priv, i);
+			struct rsnd_mod *mod = rsnd_ssiu_mod_get(priv, i);
+
 			if (np == playback)
 				rsnd_dai_connect(mod, io_p, mod->type);
 			if (np == capture)
@@ -394,7 +394,7 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv)
 	struct rsnd_ssiu *ssiu;
 	struct rsnd_mod_ops *ops;
 	const int *list = NULL;
-	int i, nr, ret;
+	int i, nr;
 
 	/*
 	 * Keep DT compatibility.
@@ -441,6 +441,8 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv)
 	}
 
 	for_each_rsnd_ssiu(ssiu, priv, i) {
+		int ret;
+
 		if (node) {
 			int j;