soundwire: Fix acquiring bus lock twice during master release
authorSanyog Kale <sanyog.r.kale@intel.com>
Fri, 27 Jul 2018 09:14:10 +0000 (14:44 +0530)
committerVinod Koul <vkoul@kernel.org>
Mon, 27 Aug 2018 04:19:48 +0000 (09:49 +0530)
As part of sdw_stream_remove_master(), sdw_stream_remove_slave() is called
which results in bus lock being acquired twice.

So, fix it by performing specific Slave remove operations in
sdw_release_master_stream() instead of calling sdw_stream_remove_slave().

Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/soundwire/stream.c

index b2682272503e7f083ff97e840841489d76324e44..e5c7e1ef63188914bfc655b1d187da5fa44166a1 100644 (file)
@@ -899,9 +899,10 @@ static void sdw_release_master_stream(struct sdw_stream_runtime *stream)
        struct sdw_master_runtime *m_rt = stream->m_rt;
        struct sdw_slave_runtime *s_rt, *_s_rt;
 
-       list_for_each_entry_safe(s_rt, _s_rt,
-                       &m_rt->slave_rt_list, m_rt_node)
-               sdw_stream_remove_slave(s_rt->slave, stream);
+       list_for_each_entry_safe(s_rt, _s_rt, &m_rt->slave_rt_list, m_rt_node) {
+               sdw_slave_port_release(s_rt->slave->bus, s_rt->slave, stream);
+               sdw_release_slave_stream(s_rt->slave, stream);
+       }
 
        list_del(&m_rt->bus_node);
 }