lockdep warns us that priv->lock and k->k_lock can cause a deadlock when after acquire of k->k_lock, process is interrupted by src, while in another routine of src .init, k->k_lock is acquired with priv->lock held.

This patch avoids a potential deadlock by not calling soc_device_match() in SRC .init callback, instead it adds new soc fields in priv->flags to differentiate SoCs.

Fixes: linux-next commit 7674bec4fc09 ("ASoC: rsnd: update BSDSR/BSDISR handling") Signed-off-by: Jiada Wang jiada_wang@mentor.com --- sound/soc/sh/rcar/core.c | 3 +++ sound/soc/sh/rcar/rsnd.h | 5 +++++ sound/soc/sh/rcar/src.c | 9 +-------- 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c index 022996d2db13..c2d466fe191f 100644 --- a/sound/soc/sh/rcar/core.c +++ b/sound/soc/sh/rcar/core.c @@ -1680,6 +1680,7 @@ static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv, static int rsnd_probe(struct platform_device *pdev) { struct rsnd_priv *priv; + struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; struct rsnd_dai *rdai; int (*probe_func[])(struct rsnd_priv *priv) = { @@ -1706,6 +1707,8 @@ static int rsnd_probe(struct platform_device *pdev)

priv->pdev = pdev; priv->flags = (unsigned long)of_device_get_match_data(dev); + if (of_device_is_compatible(np, "renesas,rcar_sound-r8a77990")) + priv->flags |= RSND_SOC_E; spin_lock_init(&priv->lock);

/* diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h index 90625c57847b..0e6ef4e18400 100644 --- a/sound/soc/sh/rcar/rsnd.h +++ b/sound/soc/sh/rcar/rsnd.h @@ -607,6 +607,8 @@ struct rsnd_priv { #define RSND_GEN1 (1 << 0) #define RSND_GEN2 (2 << 0) #define RSND_GEN3 (3 << 0) +#define RSND_SOC_MASK (0xFF << 4) +#define RSND_SOC_E (1 << 4) /* E1/E2/E3 */

/* * below value will be filled on rsnd_gen_probe() @@ -679,6 +681,9 @@ struct rsnd_priv { #define rsnd_is_gen1(priv) (((priv)->flags & RSND_GEN_MASK) == RSND_GEN1) #define rsnd_is_gen2(priv) (((priv)->flags & RSND_GEN_MASK) == RSND_GEN2) #define rsnd_is_gen3(priv) (((priv)->flags & RSND_GEN_MASK) == RSND_GEN3) +#define rsnd_is_e3(priv) (((priv)->flags & \ + (RSND_GEN_MASK | RSND_SOC_MASK)) == \ + (RSND_GEN3 | RSND_SOC_E))

#define rsnd_flags_has(p, f) ((p)->flags & (f)) #define rsnd_flags_set(p, f) ((p)->flags |= (f)) diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c index db81e066b92e..45096a66c074 100644 --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -14,7 +14,6 @@ */

#include "rsnd.h" -#include <linux/sys_soc.h>

#define SRC_NAME "src"

@@ -189,18 +188,12 @@ const static u32 chan222222[] = { 0x00000006, /* 1 to 2 */ };

-static const struct soc_device_attribute ov_soc[] = { - { .soc_id = "r8a77990" }, /* E3 */ - { /* sentinel */ } -}; - static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io, struct rsnd_mod *mod) { struct rsnd_priv *priv = rsnd_mod_to_priv(mod); struct device *dev = rsnd_priv_to_dev(priv); struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); - const struct soc_device_attribute *soc = soc_device_match(ov_soc); int is_play = rsnd_io_is_play(io); int use_src = 0; u32 fin, fout; @@ -307,7 +300,7 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io, /* * E3 need to overwrite */ - if (soc) + if (rsnd_is_e3(priv)) switch (rsnd_mod_id(mod)) { case 0: case 4:

compiler complains about following declarations

sound/soc/sh/rcar/src.c:174:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 bsdsr_table_pattern1[] = { ^~~~~ sound/soc/sh/rcar/src.c:183:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 bsdsr_table_pattern2[] = { ^~~~~ sound/soc/sh/rcar/src.c:192:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 bsisr_table[] = { ^~~~~ sound/soc/sh/rcar/src.c:201:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 chan288888[] = { ^~~~~ sound/soc/sh/rcar/src.c:210:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 chan244888[] = { ^~~~~ sound/soc/sh/rcar/src.c:219:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static u32 chan222222[] = { ^~~~~

This patch moves the 'static' keyword to the front of the declaration to fix the compiler warnings

Fixes: linux-next commit 7674bec4fc09 ("ASoC: rsnd: update BSDSR/BSDISR handling") Signed-off-by: Jiada Wang jiada_wang@mentor.com --- sound/soc/sh/rcar/src.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c index 45096a66c074..585ffba0244b 100644 --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -134,7 +134,7 @@ unsigned int rsnd_src_get_rate(struct rsnd_priv *priv, return rate; }

-const static u32 bsdsr_table_pattern1[] = { +static const u32 bsdsr_table_pattern1[] = { 0x01800000, /* 6 - 1/6 */ 0x01000000, /* 6 - 1/4 */ 0x00c00000, /* 6 - 1/3 */ @@ -143,7 +143,7 @@ const static u32 bsdsr_table_pattern1[] = { 0x00400000, /* 6 - 1 */ };

-const static u32 bsdsr_table_pattern2[] = { +static const u32 bsdsr_table_pattern2[] = { 0x02400000, /* 6 - 1/6 */ 0x01800000, /* 6 - 1/4 */ 0x01200000, /* 6 - 1/3 */ @@ -152,7 +152,7 @@ const static u32 bsdsr_table_pattern2[] = { 0x00600000, /* 6 - 1 */ };

-const static u32 bsisr_table[] = { +static const u32 bsisr_table[] = { 0x00100060, /* 6 - 1/6 */ 0x00100040, /* 6 - 1/4 */ 0x00100030, /* 6 - 1/3 */ @@ -161,7 +161,7 @@ const static u32 bsisr_table[] = { 0x00100020, /* 6 - 1 */ };

-const static u32 chan288888[] = { +static const u32 chan288888[] = { 0x00000006, /* 1 to 2 */ 0x000001fe, /* 1 to 8 */ 0x000001fe, /* 1 to 8 */ @@ -170,7 +170,7 @@ const static u32 chan288888[] = { 0x000001fe, /* 1 to 8 */ };

-const static u32 chan244888[] = { +static const u32 chan244888[] = { 0x00000006, /* 1 to 2 */ 0x0000001e, /* 1 to 4 */ 0x0000001e, /* 1 to 4 */ @@ -179,7 +179,7 @@ const static u32 chan244888[] = { 0x000001fe, /* 1 to 8 */ };

-const static u32 chan222222[] = { +static const u32 chan222222[] = { 0x00000006, /* 1 to 2 */ 0x00000006, /* 1 to 2 */ 0x00000006, /* 1 to 2 */