From: Felipe Balbi <balbi@xxxxxx>
with this patch we can finally remove the global
"the controller" pointer.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/gadget/net2272.c | 72 +++++++++++-------------------------------
1 files changed, 19 insertions(+), 53 deletions(-)
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index 08a4a36..d1b7636 100644
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -1172,17 +1172,18 @@ net2272_pullup(struct usb_gadget *_gadget, int is_on)
return 0;
}
-static int net2272_start(struct usb_gadget_driver *driver,
- int (*bind)(struct usb_gadget *));
-static int net2272_stop(struct usb_gadget_driver *driver);
+static int net2272_start(struct usb_gadget *_gadget,
+ struct usb_gadget_driver *driver);
+static int net2272_stop(struct usb_gadget *_gadget,
+ struct usb_gadget_driver *driver);
static const struct usb_gadget_ops net2272_ops = {
- .get_frame = net2272_get_frame,
- .wakeup = net2272_wakeup,
+ .get_frame = net2272_get_frame,
+ .wakeup = net2272_wakeup,
.set_selfpowered = net2272_set_selfpowered,
- .pullup = net2272_pullup,
- .start = net2272_start,
- .stop = net2272_stop,
+ .pullup = net2272_pullup,
+ .udc_start = net2272_start,
+ .udc_stop = net2272_stop,
};
/*---------------------------------------------------------------------------*/
@@ -1356,8 +1357,6 @@ net2272_set_fifo_mode(struct net2272 *dev, int mode)
/*---------------------------------------------------------------------------*/
-static struct net2272 *the_controller;
-
static void
net2272_usb_reset(struct net2272 *dev)
{
@@ -1453,20 +1452,17 @@ net2272_ep0_start(struct net2272 *dev)
* disconnect is reported. then a host may connect again, or
* the driver might get unbound.
*/
-static int net2272_start(struct usb_gadget_driver *driver,
- int (*bind)(struct usb_gadget *))
+static int net2272_start(struct usb_gadget *_gadget,
+ struct usb_gadget_driver *driver)
{
- struct net2272 *dev = the_controller;
- int ret;
+ struct net2272 *dev;
unsigned i;
- if (!driver || !bind || !driver->unbind || !driver->setup ||
+ if (!driver || !driver->unbind || !driver->setup ||
driver->speed != USB_SPEED_HIGH)
return -EINVAL;
- if (!dev)
- return -ENODEV;
- if (dev->driver)
- return -EBUSY;
+
+ dev = container_of(_gadget, struct net2272, gadget);
for (i = 0; i < 4; ++i)
dev->ep[i].irqs = 0;
@@ -1475,14 +1471,6 @@ static int net2272_start(struct usb_gadget_driver *driver,
driver->driver.bus = NULL;
dev->driver = driver;
dev->gadget.dev.driver = &driver->driver;
- ret = bind(&dev->gadget);
- if (ret) {
- dev_dbg(dev->dev, "bind to driver %s --> %d\n",
- driver->driver.name, ret);
- dev->driver = NULL;
- dev->gadget.dev.driver = NULL;
- return ret;
- }
/* ... then enable host detection and ep0; and we're ready
* for set_configuration as well as eventual disconnect.
@@ -1510,33 +1498,21 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
for (i = 0; i < 4; ++i)
net2272_dequeue_all(&dev->ep[i]);
- /* report disconnect; the driver is already quiesced */
- if (driver) {
- spin_unlock(&dev->lock);
- driver->disconnect(&dev->gadget);
- spin_lock(&dev->lock);
-
- }
net2272_usb_reinit(dev);
}
-static int net2272_stop(struct usb_gadget_driver *driver)
+static int net2272_stop(struct usb_gadget *_gadget,
+ struct usb_gadget_driver *driver)
{
- struct net2272 *dev = the_controller;
+ struct net2272 *dev;
unsigned long flags;
- if (!dev)
- return -ENODEV;
- if (!driver || driver != dev->driver)
- return -EINVAL;
+ dev = container_of(_gadget, struct net2272, gadget);
spin_lock_irqsave(&dev->lock, flags);
stop_activity(dev, driver);
spin_unlock_irqrestore(&dev->lock, flags);
- net2272_pullup(&dev->gadget, 0);
-
- driver->unbind(&dev->gadget);
dev->gadget.dev.driver = NULL;
dev->driver = NULL;
@@ -2238,7 +2214,6 @@ net2272_remove(struct net2272 *dev)
device_remove_file(dev->dev, &dev_attr_registers);
dev_info(dev->dev, "unbind\n");
- the_controller = NULL;
}
static struct net2272 * __devinit
@@ -2246,11 +2221,6 @@ net2272_probe_init(struct device *dev, unsigned int irq)
{
struct net2272 *ret;
- if (the_controller) {
- dev_warn(dev, "ignoring\n");
- return ERR_PTR(-EBUSY);
- }
-
if (!irq) {
dev_dbg(dev, "No IRQ!\n");
return ERR_PTR(-ENODEV);
@@ -2307,8 +2277,6 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags)
dma_mode_string());
dev_info(dev->dev, "version: %s\n", driver_vers);
- the_controller = dev;
-
ret = device_register(&dev->gadget.dev);
if (ret)
goto err_irq;
@@ -2684,8 +2652,6 @@ net2272_plat_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "running in 16-bit, %sbyte swap local bus mode\n",
(net2272_read(dev, LOCCTL) & (1 << BYTE_SWAP)) ? "" : "no ");
- the_controller = dev;
-
return 0;
err_io:
--
1.7.7
--
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