Amitkumar Karwar [off-list ref] writes:

From: Prameela Rani Garnepudi <redacted>

With BT support, driver has to handle two streams of data
(i.e. wlan and BT). Actual coex implementation is in firmware.
Coex module just schedule the packets to firmware by taking them
from the corresponding paths.

Structures for module and protocol operations are introduced for
this purpose. Protocol operations structure is global structure
which can be shared among different modules. Initialization of
coex and operating mode values is moved to rsi_91x_init().

Signed-off-by: Prameela Rani Garnepudi <redacted>
Signed-off-by: Siva Rebbagondla <redacted>
Signed-off-by: Amitkumar Karwar <redacted>

[...]

Do you really need to use semaphore? I think nowadays the preference is
to use something other than semaphores.

Also calling it tx_bus_lock is IMHO misleading, tx_bus_sema would be
nicer.

-- 
Kalle Valo