Re: [PATCH V3 5/8] soundwire: amd: add SoundWire manager interrupt handling

Pierre-Louis Bossart
2023-02-21T17:01:46Z

> +static void amd_sdw_read_and_process_ping_status(struct amd_sdw_manager *amd_manager)
> +{
> + u64 response;
> +
> + mutex_lock(&amd_manager->bus.msg_lock);
> + response = amd_sdw_send_cmd_get_resp(amd_manager, 0, 0);
> + mutex_unlock(&amd_manager->bus.msg_lock);
> + amd_sdw_process_ping_status(response, amd_manager);

do you have a case where a new command could be sent after the
mutex_unlock(), which could change the response fields?

In other words, should the last amd_sdw_process_ping_status() function
be protected as well?

> +}