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soundwire: stream: introduce sdw_slave_rt_find() helper

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Before we split the alloc and config steps, we need a helper to find
the Slave runtime for a stream. The helper is based on the search loop
in sdw_slave_rt_free(), which can now be simplified.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-18-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2022-01-26 09:17:13 +08:00 committed by Vinod Koul
parent ac3bc88cc5
commit 5e1df5431f
1 changed files with 22 additions and 12 deletions
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34
drivers/soundwire/stream.c
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@ -1058,6 +1058,23 @@ static int sdw_slave_rt_config(struct sdw_slave_runtime *s_rt,
return 0;
}
static struct sdw_slave_runtime *sdw_slave_rt_find(struct sdw_slave *slave,
struct sdw_stream_runtime *stream)
{
struct sdw_slave_runtime *s_rt, *_s_rt;
struct sdw_master_runtime *m_rt;
list_for_each_entry(m_rt, &stream->master_list, stream_node) {
/* Retrieve Slave runtime handle */
list_for_each_entry_safe(s_rt, _s_rt,
&m_rt->slave_rt_list, m_rt_node) {
if (s_rt->slave == slave)
return s_rt;
}
}
return NULL;
}
/**
* sdw_slave_rt_free() - Free Slave(s) runtime handle
*
@ -1069,19 +1086,12 @@ static int sdw_slave_rt_config(struct sdw_slave_runtime *s_rt,
static void sdw_slave_rt_free(struct sdw_slave *slave,
struct sdw_stream_runtime *stream)
{
struct sdw_slave_runtime *s_rt, *_s_rt;
struct sdw_master_runtime *m_rt;
struct sdw_slave_runtime *s_rt;
list_for_each_entry(m_rt, &stream->master_list, stream_node) {
/* Retrieve Slave runtime handle */
list_for_each_entry_safe(s_rt, _s_rt,
&m_rt->slave_rt_list, m_rt_node) {
if (s_rt->slave == slave) {
list_del(&s_rt->m_rt_node);
kfree(s_rt);
return;
}
}
s_rt = sdw_slave_rt_find(slave, stream);
if (s_rt) {
list_del(&s_rt->m_rt_node);
kfree(s_rt);
}
}