APR bus driver calls each APR client callback with pointer to the APR
response packet.  The callbacks are not suppose to modify that response
packet, so make it a pointer to const to document that expectation
explicitly.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
---
 include/linux/soc/qcom/apr.h  | 2 +-
 sound/soc/qcom/qdsp6/q6adm.c  | 4 ++--
 sound/soc/qcom/qdsp6/q6afe.c  | 4 ++--
 sound/soc/qcom/qdsp6/q6asm.c  | 8 ++++----
 sound/soc/qcom/qdsp6/q6core.c | 4 ++--
 5 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h
index a532d1e4b1f4..35f44cd868cb 100644
--- a/include/linux/soc/qcom/apr.h
+++ b/include/linux/soc/qcom/apr.h
@@ -155,7 +155,7 @@ struct apr_driver {
 	int	(*probe)(struct apr_device *sl);
 	void	(*remove)(struct apr_device *sl);
 	int	(*callback)(struct apr_device *a,
-			    struct apr_resp_pkt *d);
+			    const struct apr_resp_pkt *d);
 	int	(*gpr_callback)(struct gpr_resp_pkt *d, void *data, int op);
 	struct device_driver		driver;
 	const struct apr_device_id	*id_table;
diff --git a/sound/soc/qcom/qdsp6/q6adm.c b/sound/soc/qcom/qdsp6/q6adm.c
index 0b8d06ec8b26..608ca0e41539 100644
--- a/sound/soc/qcom/qdsp6/q6adm.c
+++ b/sound/soc/qcom/qdsp6/q6adm.c
@@ -186,11 +186,11 @@ static void q6adm_free_copp(struct kref *ref)
 	kfree(c);
 }
 
-static int q6adm_callback(struct apr_device *adev, struct apr_resp_pkt *data)
+static int q6adm_callback(struct apr_device *adev, const struct apr_resp_pkt *data)
 {
 	struct aprv2_ibasic_rsp_result_t *result = data->payload;
 	int port_idx, copp_idx;
-	struct apr_hdr *hdr = &data->hdr;
+	const struct apr_hdr *hdr = &data->hdr;
 	struct q6copp *copp;
 	struct q6adm *adm = dev_get_drvdata(&adev->dev);
 
diff --git a/sound/soc/qcom/qdsp6/q6afe.c b/sound/soc/qcom/qdsp6/q6afe.c
index 980851a12976..4f9f9a7277df 100644
--- a/sound/soc/qcom/qdsp6/q6afe.c
+++ b/sound/soc/qcom/qdsp6/q6afe.c
@@ -958,11 +958,11 @@ static struct q6afe_port *q6afe_find_port(struct q6afe *afe, int token)
 	return ret;
 }
 
-static int q6afe_callback(struct apr_device *adev, struct apr_resp_pkt *data)
+static int q6afe_callback(struct apr_device *adev, const struct apr_resp_pkt *data)
 {
 	struct q6afe *afe = dev_get_drvdata(&adev->dev);
 	struct aprv2_ibasic_rsp_result_t *res;
-	struct apr_hdr *hdr = &data->hdr;
+	const struct apr_hdr *hdr = &data->hdr;
 	struct q6afe_port *port;
 
 	if (!data->payload_size)
diff --git a/sound/soc/qcom/qdsp6/q6asm.c b/sound/soc/qcom/qdsp6/q6asm.c
index e7295b7b2461..df183b7a4019 100644
--- a/sound/soc/qcom/qdsp6/q6asm.c
+++ b/sound/soc/qcom/qdsp6/q6asm.c
@@ -599,12 +599,12 @@ int q6asm_get_hw_pointer(struct audio_client *ac, unsigned int dir)
 EXPORT_SYMBOL_GPL(q6asm_get_hw_pointer);
 
 static int32_t q6asm_stream_callback(struct apr_device *adev,
-				     struct apr_resp_pkt *data,
+				     const struct apr_resp_pkt *data,
 				     int session_id)
 {
 	struct q6asm *q6asm = dev_get_drvdata(&adev->dev);
 	struct aprv2_ibasic_rsp_result_t *result;
-	struct apr_hdr *hdr = &data->hdr;
+	const struct apr_hdr *hdr = &data->hdr;
 	struct audio_port_data *port;
 	struct audio_client *ac;
 	uint32_t client_event = 0;
@@ -744,13 +744,13 @@ static int32_t q6asm_stream_callback(struct apr_device *adev,
 }
 
 static int q6asm_srvc_callback(struct apr_device *adev,
-			       struct apr_resp_pkt *data)
+			       const struct apr_resp_pkt *data)
 {
 	struct q6asm *q6asm = dev_get_drvdata(&adev->dev);
 	struct aprv2_ibasic_rsp_result_t *result;
 	struct audio_port_data *port;
 	struct audio_client *ac = NULL;
-	struct apr_hdr *hdr = &data->hdr;
+	const struct apr_hdr *hdr = &data->hdr;
 	struct q6asm *a;
 	uint32_t sid = 0;
 	uint32_t dir = 0;
diff --git a/sound/soc/qcom/qdsp6/q6core.c b/sound/soc/qcom/qdsp6/q6core.c
index 49cfb32cd209..51398199bff3 100644
--- a/sound/soc/qcom/qdsp6/q6core.c
+++ b/sound/soc/qcom/qdsp6/q6core.c
@@ -67,11 +67,11 @@ struct q6core {
 
 static struct q6core *g_core;
 
-static int q6core_callback(struct apr_device *adev, struct apr_resp_pkt *data)
+static int q6core_callback(struct apr_device *adev, const struct apr_resp_pkt *data)
 {
 	struct q6core *core = dev_get_drvdata(&adev->dev);
 	struct aprv2_ibasic_rsp_result_t *result;
-	struct apr_hdr *hdr = &data->hdr;
+	const struct apr_hdr *hdr = &data->hdr;
 
 	result = data->payload;
 	switch (hdr->opcode) {

-- 
2.48.1