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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>
This commit is contained in:
Kuninori Morimoto 2011-12-08 18:31:37 -08:00 committed by Felipe Balbi
parent 6d0376f844
commit 2d833faad2
1 changed files with 36 additions and 0 deletions
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36
drivers/usb/renesas_usbhs/mod_host.c
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@ -703,6 +703,34 @@ static int usbhsh_queue_push(struct usb_hcd *hcd,
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 @@ static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv,
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 @@ static int usbhsh_irq_dtch(struct usbhs_priv *priv,
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;
}