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Date: Mon, 20 Nov 2023 18:47:20 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Vinod Koul <vkoul@...nel.org>,
Bard Liao <yung-chuan.liao@...ux.intel.com>,
Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
Sanyog Kale <sanyog.r.kale@...el.com>,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH] soundwire: stream: constify sdw_port_config when adding devices
sdw_stream_add_master() and sdw_stream_add_slave() do not modify
contents of passed sdw_port_config, so it can be made const for code
safety and as documentation of expected usage.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
drivers/soundwire/stream.c | 10 +++++-----
include/linux/soundwire/sdw.h | 6 +++---
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index 69719b335bcb..9dc6399f206a 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -897,7 +897,7 @@ static struct sdw_port_runtime *sdw_port_alloc(struct list_head *port_list)
}
static int sdw_port_config(struct sdw_port_runtime *p_rt,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
int port_index)
{
p_rt->ch_mask = port_config[port_index].ch_mask;
@@ -970,7 +970,7 @@ static int sdw_slave_port_is_valid_range(struct device *dev, int num)
static int sdw_slave_port_config(struct sdw_slave *slave,
struct sdw_slave_runtime *s_rt,
- struct sdw_port_config *port_config)
+ const struct sdw_port_config *port_config)
{
struct sdw_port_runtime *p_rt;
int ret;
@@ -1026,7 +1026,7 @@ static int sdw_master_port_alloc(struct sdw_master_runtime *m_rt,
}
static int sdw_master_port_config(struct sdw_master_runtime *m_rt,
- struct sdw_port_config *port_config)
+ const struct sdw_port_config *port_config)
{
struct sdw_port_runtime *p_rt;
int ret;
@@ -1861,7 +1861,7 @@ EXPORT_SYMBOL(sdw_release_stream);
*/
int sdw_stream_add_master(struct sdw_bus *bus,
struct sdw_stream_config *stream_config,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream)
{
@@ -1981,7 +1981,7 @@ EXPORT_SYMBOL(sdw_stream_remove_master);
*/
int sdw_stream_add_slave(struct sdw_slave *slave,
struct sdw_stream_config *stream_config,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream)
{
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 4f3d14bb1538..904004d8b562 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -1040,7 +1040,7 @@ int sdw_compute_params(struct sdw_bus *bus);
int sdw_stream_add_master(struct sdw_bus *bus,
struct sdw_stream_config *stream_config,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream);
int sdw_stream_remove_master(struct sdw_bus *bus,
@@ -1062,7 +1062,7 @@ void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id
int sdw_stream_add_slave(struct sdw_slave *slave,
struct sdw_stream_config *stream_config,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream);
int sdw_stream_remove_slave(struct sdw_slave *slave,
@@ -1084,7 +1084,7 @@ int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
static inline int sdw_stream_add_slave(struct sdw_slave *slave,
struct sdw_stream_config *stream_config,
- struct sdw_port_config *port_config,
+ const struct sdw_port_config *port_config,
unsigned int num_ports,
struct sdw_stream_runtime *stream)
{
--
2.34.1
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