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path: root/drivers/usb/musb/musb_gadget.c
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Diffstat (limited to 'drivers/usb/musb/musb_gadget.c')
-rw-r--r--drivers/usb/musb/musb_gadget.c39
1 files changed, 29 insertions, 10 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index ac3d2eec20f..f42c29b11f7 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -574,6 +574,15 @@ void musb_g_tx(struct musb *musb, u8 epnum)
if (request->actual == request->length) {
musb_g_giveback(musb_ep, request, 0);
+ /*
+ * In the giveback function the MUSB lock is
+ * released and acquired after sometime. During
+ * this time period the INDEX register could get
+ * changed by the gadget_queue function especially
+ * on SMP systems. Reselect the INDEX to be sure
+ * we are reading/modifying the right registers
+ */
+ musb_ep_select(mbase, epnum);
req = musb_ep->desc ? next_request(musb_ep) : NULL;
if (!req) {
dev_dbg(musb->controller, "%s idle now\n",
@@ -983,6 +992,15 @@ void musb_g_rx(struct musb *musb, u8 epnum)
}
#endif
musb_g_giveback(musb_ep, request, 0);
+ /*
+ * In the giveback function the MUSB lock is
+ * released and acquired after sometime. During
+ * this time period the INDEX register could get
+ * changed by the gadget_queue function especially
+ * on SMP systems. Reselect the INDEX to be sure
+ * we are reading/modifying the right registers
+ */
+ musb_ep_select(mbase, epnum);
req = next_request(musb_ep);
if (!req)
@@ -1624,7 +1642,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget)
}
spin_unlock_irqrestore(&musb->lock, flags);
- otg_start_srp(musb->xceiv);
+ otg_start_srp(musb->xceiv->otg);
spin_lock_irqsave(&musb->lock, flags);
/* Block idling for at least 1s */
@@ -1703,7 +1721,7 @@ static int musb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
if (!musb->xceiv->set_power)
return -EOPNOTSUPP;
- return otg_set_power(musb->xceiv, mA);
+ return usb_phy_set_power(musb->xceiv, mA);
}
static int musb_gadget_pullup(struct usb_gadget *gadget, int is_on)
@@ -1762,7 +1780,7 @@ static void musb_gadget_release(struct device *dev)
}
-static void __init
+static void __devinit
init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in)
{
struct musb_hw_ep *hw_ep = musb->endpoints + epnum;
@@ -1799,7 +1817,7 @@ init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in)
* Initialize the endpoints exposed to peripheral drivers, with backlinks
* to the rest of the driver state.
*/
-static inline void __init musb_g_init_endpoints(struct musb *musb)
+static inline void __devinit musb_g_init_endpoints(struct musb *musb)
{
u8 epnum;
struct musb_hw_ep *hw_ep;
@@ -1832,7 +1850,7 @@ static inline void __init musb_g_init_endpoints(struct musb *musb)
/* called once during driver setup to initialize and link into
* the driver model; memory is zeroed.
*/
-int __init musb_gadget_setup(struct musb *musb)
+int __devinit musb_gadget_setup(struct musb *musb)
{
int status;
@@ -1898,6 +1916,7 @@ static int musb_gadget_start(struct usb_gadget *g,
struct usb_gadget_driver *driver)
{
struct musb *musb = gadget_to_musb(g);
+ struct usb_otg *otg = musb->xceiv->otg;
unsigned long flags;
int retval = -EINVAL;
@@ -1914,7 +1933,7 @@ static int musb_gadget_start(struct usb_gadget *g,
spin_lock_irqsave(&musb->lock, flags);
musb->is_active = 1;
- otg_set_peripheral(musb->xceiv, &musb->g);
+ otg_set_peripheral(otg, &musb->g);
musb->xceiv->state = OTG_STATE_B_IDLE;
/*
@@ -1938,15 +1957,15 @@ static int musb_gadget_start(struct usb_gadget *g,
* handles power budgeting ... this way also
* ensures HdrcStart is indirectly called.
*/
- retval = usb_add_hcd(musb_to_hcd(musb), -1, 0);
+ retval = usb_add_hcd(musb_to_hcd(musb), 0, 0);
if (retval < 0) {
dev_dbg(musb->controller, "add_hcd failed, %d\n", retval);
goto err2;
}
if ((musb->xceiv->last_event == USB_EVENT_ID)
- && musb->xceiv->set_vbus)
- otg_set_vbus(musb->xceiv, 1);
+ && otg->set_vbus)
+ otg_set_vbus(otg, 1);
hcd->self.uses_pio_for_control = 1;
}
@@ -2028,7 +2047,7 @@ static int musb_gadget_stop(struct usb_gadget *g,
musb->xceiv->state = OTG_STATE_UNDEFINED;
stop_activity(musb, driver);
- otg_set_peripheral(musb->xceiv, NULL);
+ otg_set_peripheral(musb->xceiv->otg, NULL);
dev_dbg(musb->controller, "unregistering driver %s\n", driver->function);