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Commit b1930da0 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Felipe Balbi
Browse files

usb: renesas_usbhs: add usbhsh_is_running() 



It is possible to judge whether renesas_usbhs driver is running,
by checking attch irq mask.
This patch adds usbhsh_is_running() to check it.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 31e00fd1

drivers/usb/renesas_usbhs/mod_host.c

+32 −0
Original line number Original line Diff line number Diff line
@@ -190,6 +190,21 @@ static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv, 
	kfree(ureq);

	kfree(ureq);

}

}





/*

 *		status

 */

static int usbhsh_is_running(struct usbhsh_hpriv *hpriv)

{

	/*

	 * we can decide some device is attached or not

	 * by checking mod.irq_attch

	 * see

	 *	usbhsh_irq_attch()

	 *	usbhsh_irq_dtch()

	 */

	return (hpriv->mod.irq_attch == NULL);

}



/*

/*

 *		pipe control

 *		pipe control

 */

 */
@@ -900,6 +915,11 @@ static int usbhsh_urb_enqueue(struct usb_hcd *hcd, 




	dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out");

	dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out");





	if (!usbhsh_is_running(hpriv)) {

		ret = -EIO;

		goto usbhsh_urb_enqueue_error_not_linked;

	}



	ret = usb_hcd_link_urb_to_ep(hcd, urb);

	ret = usb_hcd_link_urb_to_ep(hcd, urb);

	if (ret)

	if (ret)

		goto usbhsh_urb_enqueue_error_not_linked;

		goto usbhsh_urb_enqueue_error_not_linked;
@@ -1249,6 +1269,12 @@ static int usbhsh_irq_attch(struct usbhs_priv *priv, 
	 * attch interrupt might happen infinitely on some device

	 * attch interrupt might happen infinitely on some device

	 * (on self power USB hub ?)

	 * (on self power USB hub ?)

	 * disable it here.

	 * disable it here.

	 *

	 * usbhsh_is_running() becomes effective

	 * according to this process.

	 * see

	 *	usbhsh_is_running()

	 *	usbhsh_urb_enqueue()

	 */

	 */

	hpriv->mod.irq_attch = NULL;

	hpriv->mod.irq_attch = NULL;

	usbhs_irq_callback_update(priv, &hpriv->mod);

	usbhs_irq_callback_update(priv, &hpriv->mod);
@@ -1269,6 +1295,12 @@ static int usbhsh_irq_dtch(struct usbhs_priv *priv, 




	/*

	/*

	 * enable attch interrupt again

	 * enable attch interrupt again

	 *

	 * usbhsh_is_running() becomes invalid

	 * according to this process.

	 * see

	 *	usbhsh_is_running()

	 *	usbhsh_urb_enqueue()

	 */

	 */

	hpriv->mod.irq_attch = usbhsh_irq_attch;

	hpriv->mod.irq_attch = usbhsh_irq_attch;

	usbhs_irq_callback_update(priv, &hpriv->mod);

	usbhs_irq_callback_update(priv, &hpriv->mod);