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Commit e1dd9f2a authored by Chris Lew's avatar Chris Lew
Browse files

sound: usb: Add QMI bye callback 



On unexpected SSRs, a del client notification may not be sent. In order
to receive client removal notifications in this situation, usb should
register for the bye callback. Perform client disconnect cleanup in
the bye callback.

Change-Id: Id99195994a828f80e8acff8c21d1cf69e9ad1e49
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent b1544106

sound/usb/usb_audio_qmi_svc.c

+20 −0
Original line number Diff line number Diff line
@@ -1184,6 +1184,25 @@ static void uaudio_qmi_disconnect_work(struct work_struct *w) 
	}

}



static void uaudio_qmi_bye_cb(struct qmi_handle *handle, unsigned int node)

{

	struct uaudio_qmi_svc *svc = uaudio_svc;



	pr_debug("%s: node:\n", __func__, node);

	if (svc->uaudio_svc_hdl != handle) {

		pr_err("%s: handle mismatch\n", __func__);

		return;

	}



	if (svc->client_connected && svc->client_sq.sq_node == node) {

		queue_work(svc->uaudio_wq, &svc->qmi_disconnect_work);

		svc->client_sq.sq_node = 0;

		svc->client_sq.sq_port = 0;

		svc->client_sq.sq_family = 0;

		svc->client_connected = false;

	}

}



static void uaudio_qmi_svc_disconnect_cb(struct qmi_handle *handle,

				  unsigned int node, unsigned int port)

{
@@ -1206,6 +1225,7 @@ static void uaudio_qmi_svc_disconnect_cb(struct qmi_handle *handle, 
}



static struct qmi_ops uaudio_svc_ops_options = {

	.bye = uaudio_qmi_bye_cb,

	.del_client = uaudio_qmi_svc_disconnect_cb,

};