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path: root/drivers/usb/gadget/net2280.c
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Diffstat (limited to 'drivers/usb/gadget/net2280.c')
-rw-r--r--drivers/usb/gadget/net2280.c40
1 files changed, 34 insertions, 6 deletions
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 5cfb5ebf3881..8ae70de2c37d 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -178,6 +178,7 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
/* ep_reset() has already been called */
ep->stopped = 0;
+ ep->wedged = 0;
ep->out_overflow = 0;
/* set speed-dependent max packet; may kick in high bandwidth */
@@ -1218,7 +1219,7 @@ static int net2280_dequeue (struct usb_ep *_ep, struct usb_request *_req)
static int net2280_fifo_status (struct usb_ep *_ep);
static int
-net2280_set_halt (struct usb_ep *_ep, int value)
+net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
{
struct net2280_ep *ep;
unsigned long flags;
@@ -1239,16 +1240,21 @@ net2280_set_halt (struct usb_ep *_ep, int value)
else if (ep->is_in && value && net2280_fifo_status (_ep) != 0)
retval = -EAGAIN;
else {
- VDEBUG (ep->dev, "%s %s halt\n", _ep->name,
- value ? "set" : "clear");
+ VDEBUG (ep->dev, "%s %s %s\n", _ep->name,
+ value ? "set" : "clear",
+ wedged ? "wedge" : "halt");
/* set/clear, then synch memory views with the device */
if (value) {
if (ep->num == 0)
ep->dev->protocol_stall = 1;
else
set_halt (ep);
- } else
+ if (wedged)
+ ep->wedged = 1;
+ } else {
clear_halt (ep);
+ ep->wedged = 0;
+ }
(void) readl (&ep->regs->ep_rsp);
}
spin_unlock_irqrestore (&ep->dev->lock, flags);
@@ -1257,6 +1263,20 @@ net2280_set_halt (struct usb_ep *_ep, int value)
}
static int
+net2280_set_halt(struct usb_ep *_ep, int value)
+{
+ return net2280_set_halt_and_wedge(_ep, value, 0);
+}
+
+static int
+net2280_set_wedge(struct usb_ep *_ep)
+{
+ if (!_ep || _ep->name == ep0name)
+ return -EINVAL;
+ return net2280_set_halt_and_wedge(_ep, 1, 1);
+}
+
+static int
net2280_fifo_status (struct usb_ep *_ep)
{
struct net2280_ep *ep;
@@ -1302,6 +1322,7 @@ static const struct usb_ep_ops net2280_ep_ops = {
.dequeue = net2280_dequeue,
.set_halt = net2280_set_halt,
+ .set_wedge = net2280_set_wedge,
.fifo_status = net2280_fifo_status,
.fifo_flush = net2280_fifo_flush,
};
@@ -2410,9 +2431,14 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
goto do_stall;
if ((e = get_ep_by_addr (dev, w_index)) == 0)
goto do_stall;
- clear_halt (e);
+ if (e->wedged) {
+ VDEBUG(dev, "%s wedged, halt not cleared\n",
+ ep->ep.name);
+ } else {
+ VDEBUG(dev, "%s clear halt\n", ep->ep.name);
+ clear_halt(e);
+ }
allow_status (ep);
- VDEBUG (dev, "%s clear halt\n", ep->ep.name);
goto next_endpoints;
}
break;
@@ -2427,6 +2453,8 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
goto do_stall;
if ((e = get_ep_by_addr (dev, w_index)) == 0)
goto do_stall;
+ if (e->ep.name == ep0name)
+ goto do_stall;
set_halt (e);
allow_status (ep);
VDEBUG (dev, "%s set halt\n", ep->ep.name);