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USB: gadget: net2280: implement set_wedge

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This patch (as1132) implements the set_wedge() method for net2280.
This method is necessary for strict USBCV compliance in
g_file_storage.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2008-08-14 15:49:11 -04:00 committed by Greg Kroah-Hartman
parent 851a526dcf
commit 8066134ff8
2 changed files with 35 additions and 6 deletions
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40
drivers/usb/gadget/net2280.c
View File

@ -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);
@ -1256,6 +1262,20 @@ net2280_set_halt (struct usb_ep *_ep, int value)
return retval;
}
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)
{
@ -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);

1
drivers/usb/gadget/net2280.h
View File

@ -109,6 +109,7 @@ struct net2280_ep {
in_fifo_validate : 1,
out_overflow : 1,
stopped : 1,
wedged : 1,
is_in : 1,
is_iso : 1,
responded : 1;