linux-kernel - [PATCH 2/2] ASoC: wm_adsp: Use snd_ctl_elem_type

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Date:   Wed, 30 Dec 2020 17:24:27 +0000
From:   Richard Fitzgerald <rf@...nsource.cirrus.com>
To:     <broonie@...nel.org>
CC:     <patches@...nsource.cirrus.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: [PATCH 2/2] ASoC: wm_adsp: Use snd_ctl_elem_type_t for control types

Sparse will complain about trying to convert between values declared
as snd_ctl_elem_type_t and other types. This patch converts to
consistently use snd_ctl_elem_type_t for control type values. A __force
cast is needed in a couple of cases where the control type value is
parsed out of a DSP data block.

Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 sound/soc/codecs/wm_adsp.c | 12 +++++++-----
 sound/soc/codecs/wmfw.h    |  6 +++---
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 8cfa8ac1b8c4..f8ad768364c2 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -619,7 +619,7 @@ struct wm_coeff_ctl {
 	unsigned int set:1;
 	struct soc_bytes_ext bytes_ext;
 	unsigned int flags;
-	unsigned int type;
+	snd_ctl_elem_type_t type;
 };
 
 static const char *wm_adsp_mem_region_name(unsigned int type)
@@ -1420,7 +1420,7 @@ static int wm_adsp_create_control(struct wm_adsp *dsp,
 				  const struct wm_adsp_alg_region *alg_region,
 				  unsigned int offset, unsigned int len,
 				  const char *subname, unsigned int subname_len,
-				  unsigned int flags, unsigned int type)
+				  unsigned int flags, snd_ctl_elem_type_t type)
 {
 	struct wm_coeff_ctl *ctl;
 	struct wmfw_ctl_work *ctl_work;
@@ -1554,7 +1554,7 @@ struct wm_coeff_parsed_coeff {
 	int mem_type;
 	const u8 *name;
 	int name_len;
-	int ctl_type;
+	snd_ctl_elem_type_t ctl_type;
 	int flags;
 	int len;
 };
@@ -1649,7 +1649,7 @@ static inline void wm_coeff_parse_coeff(struct wm_adsp *dsp, const u8 **data,
 		blk->mem_type = le16_to_cpu(raw->hdr.type);
 		blk->name = raw->name;
 		blk->name_len = strlen(raw->name);
-		blk->ctl_type = le16_to_cpu(raw->ctl_type);
+		blk->ctl_type = (__force snd_ctl_elem_type_t)le16_to_cpu(raw->ctl_type);
 		blk->flags = le16_to_cpu(raw->flags);
 		blk->len = le32_to_cpu(raw->len);
 		break;
@@ -1662,7 +1662,9 @@ static inline void wm_coeff_parse_coeff(struct wm_adsp *dsp, const u8 **data,
 						      &blk->name);
 		wm_coeff_parse_string(sizeof(u8), &tmp, NULL);
 		wm_coeff_parse_string(sizeof(u16), &tmp, NULL);
-		blk->ctl_type = wm_coeff_parse_int(sizeof(raw->ctl_type), &tmp);
+		blk->ctl_type =
+			(__force snd_ctl_elem_type_t)wm_coeff_parse_int(sizeof(raw->ctl_type),
+									&tmp);
 		blk->flags = wm_coeff_parse_int(sizeof(raw->flags), &tmp);
 		blk->len = wm_coeff_parse_int(sizeof(raw->len), &tmp);
 
diff --git a/sound/soc/codecs/wmfw.h b/sound/soc/codecs/wmfw.h
index 7423272c30e9..f3d51602f85c 100644
--- a/sound/soc/codecs/wmfw.h
+++ b/sound/soc/codecs/wmfw.h
@@ -24,9 +24,9 @@
 #define WMFW_CTL_FLAG_READABLE    0x0001
 
 /* Non-ALSA coefficient types start at 0x1000 */
-#define WMFW_CTL_TYPE_ACKED       0x1000 /* acked control */
-#define WMFW_CTL_TYPE_HOSTEVENT   0x1001 /* event control */
-#define WMFW_CTL_TYPE_HOST_BUFFER 0x1002 /* host buffer pointer */
+#define WMFW_CTL_TYPE_ACKED       ((__force snd_ctl_elem_type_t)0x1000) /* acked control */
+#define WMFW_CTL_TYPE_HOSTEVENT   ((__force snd_ctl_elem_type_t)0x1001) /* event control */
+#define WMFW_CTL_TYPE_HOST_BUFFER ((__force snd_ctl_elem_type_t)0x1002) /* host buffer pointer */
 
 struct wmfw_header {
 	char magic[4];
-- 
2.20.1