usb: renesas_usbhs: add force packet remove method
Packet should be force removed when reset/detach
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c
index 9715a70..92dcc7e 100644
--- a/drivers/usb/renesas_usbhs/mod_host.c
+++ b/drivers/usb/renesas_usbhs/mod_host.c
@@ -703,6 +703,34 @@
return 0;
}
+static void usbhsh_queue_force_pop(struct usbhs_priv *priv,
+ struct usbhs_pipe *pipe)
+{
+ struct usbhs_pkt *pkt;
+
+ while (1) {
+ pkt = usbhs_pkt_pop(pipe, NULL);
+ if (!pkt)
+ break;
+
+ /*
+ * if all packet are gone, usbhsh_endpoint_disable()
+ * will be called.
+ * then, attached device/endpoint/pipe will be detached
+ */
+ usbhsh_queue_done(priv, pkt);
+ }
+}
+
+static void usbhsh_queue_force_pop_all(struct usbhs_priv *priv)
+{
+ struct usbhs_pipe *pos;
+ int i;
+
+ usbhs_for_each_pipe_with_dcp(pos, priv, i)
+ usbhsh_queue_force_pop(priv, pos);
+}
+
/*
* DCP setup stage
*/
@@ -1106,6 +1134,8 @@
USB_PORT_STAT_HIGH_SPEED |
USB_PORT_STAT_LOW_SPEED);
+ usbhsh_queue_force_pop_all(priv);
+
usbhs_bus_send_reset(priv);
msleep(20);
usbhs_bus_send_sof_enable(priv);
@@ -1309,6 +1339,12 @@
hpriv->mod.irq_attch = usbhsh_irq_attch;
usbhs_irq_callback_update(priv, &hpriv->mod);
+ /*
+ * usbhsh_queue_force_pop_all() should be called
+ * after usbhsh_is_running() becomes invalid.
+ */
+ usbhsh_queue_force_pop_all(priv);
+
return 0;
}