[PATCH] USB: dummy_hcd: USB_PORT_FEAT changed to USB_PORT_STAT

This patch makes some cosmetic changes to dummy_hcd:

	Minor alterations of comments and whitespace.

	Replace USB_PORT_FEAT_xxx with USB_PORT_STAT_xxx.  This is
	appropriate as the values are stored in a status variable
	and they aren't feature indices.  Also it allows the
	elimination of a bunch of awkward bit shift operations.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index e9b95df..ffedf4d 100644 (file)
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -601,7 +601,7 @@ static int dummy_wakeup (struct usb_gadget *_gadget)
        struct dummy    *dum;
 
        dum = gadget_to_dummy (_gadget);
-       if (!(dum->port_status & (1 << USB_PORT_FEAT_SUSPEND))
+       if (!(dum->port_status & USB_PORT_STAT_SUSPEND)
                        || !(dum->devstatus &
                                ( (1 << USB_DEVICE_B_HNP_ENABLE)
                                | (1 << USB_DEVICE_REMOTE_WAKEUP))))
@@ -609,7 +609,7 @@ static int dummy_wakeup (struct usb_gadget *_gadget)
 
        /* hub notices our request, issues downstream resume, etc */
        dum->resuming = 1;
-       dum->port_status |= (1 << USB_PORT_FEAT_C_SUSPEND);
+       dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
        return 0;
 }
 
@@ -661,15 +661,15 @@ DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
  * for each driver that registers:  just add to a big root hub.
  */
 
+/* This doesn't need to do anything because the udc device structure is
+ * stored inside the hcd and will be deallocated along with it. */
 static void
-dummy_udc_release (struct device *dev)
-{
-}
+dummy_udc_release (struct device *dev) {}
 
+/* This doesn't need to do anything because the pdev structure is
+ * statically allocated. */
 static void
-dummy_pdev_release (struct device *dev)
-{
-}
+dummy_pdev_release (struct device *dev) {}
 
 static int
 dummy_register_udc (struct dummy *dum)
@@ -753,15 +753,13 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
                return retval;
        }
 
-       // FIXME: Check these calls for errors and re-order
        driver->driver.bus = dum->gadget.dev.parent->bus;
        driver_register (&driver->driver);
-
        device_bind_driver (&dum->gadget.dev);
 
        /* khubd will enumerate this in a while */
        dum->port_status |= USB_PORT_STAT_CONNECTION
-               | (1 << USB_PORT_FEAT_C_CONNECTION);
+               | (USB_PORT_STAT_C_CONNECTION << 16);
        return 0;
 }
 EXPORT_SYMBOL (usb_gadget_register_driver);
@@ -807,14 +805,13 @@ usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
        stop_activity (dum, driver);
        dum->port_status &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE |
                        USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
-       dum->port_status |= (1 << USB_PORT_FEAT_C_CONNECTION);
+       dum->port_status |= (USB_PORT_STAT_C_CONNECTION << 16);
        spin_unlock_irqrestore (&dum->lock, flags);
 
        driver->unbind (&dum->gadget);
        dum->driver = NULL;
 
        device_release_driver (&dum->gadget.dev);
-
        driver_unregister (&driver->driver);
 
        return 0;
@@ -1406,11 +1403,11 @@ return_urb:
 /*-------------------------------------------------------------------------*/
 
 #define PORT_C_MASK \
-        ((1 << USB_PORT_FEAT_C_CONNECTION) \
-       | (1 << USB_PORT_FEAT_C_ENABLE) \
-       | (1 << USB_PORT_FEAT_C_SUSPEND) \
-       | (1 << USB_PORT_FEAT_C_OVER_CURRENT) \
-       | (1 << USB_PORT_FEAT_C_RESET))
+       ((USB_PORT_STAT_C_CONNECTION \
+       | USB_PORT_STAT_C_ENABLE \
+       | USB_PORT_STAT_C_SUSPEND \
+       | USB_PORT_STAT_C_OVERCURRENT \
+       | USB_PORT_STAT_C_RESET) << 16)
 
 static int dummy_hub_status (struct usb_hcd *hcd, char *buf)
 {
@@ -1465,7 +1462,7 @@ static int dummy_hub_control (
        case ClearPortFeature:
                switch (wValue) {
                case USB_PORT_FEAT_SUSPEND:
-                       if (dum->port_status & (1 << USB_PORT_FEAT_SUSPEND)) {
+                       if (dum->port_status & USB_PORT_STAT_SUSPEND) {
                                /* 20msec resume signaling */
                                dum->resuming = 1;
                                dum->re_timeout = jiffies +
@@ -1495,8 +1492,8 @@ static int dummy_hub_control (
                 * complete it!!
                 */
                if (dum->resuming && time_after (jiffies, dum->re_timeout)) {
-                       dum->port_status |= (1 << USB_PORT_FEAT_C_SUSPEND);
-                       dum->port_status &= ~(1 << USB_PORT_FEAT_SUSPEND);
+                       dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16);
+                       dum->port_status &= ~USB_PORT_STAT_SUSPEND;
                        dum->resuming = 0;
                        dum->re_timeout = 0;
                        if (dum->driver && dum->driver->resume) {
@@ -1505,10 +1502,10 @@ static int dummy_hub_control (
                                spin_lock (&dum->lock);
                        }
                }
-               if ((dum->port_status & (1 << USB_PORT_FEAT_RESET)) != 0
+               if ((dum->port_status & USB_PORT_STAT_RESET) != 0
                                && time_after (jiffies, dum->re_timeout)) {
-                       dum->port_status |= (1 << USB_PORT_FEAT_C_RESET);
-                       dum->port_status &= ~(1 << USB_PORT_FEAT_RESET);
+                       dum->port_status |= (USB_PORT_STAT_C_RESET << 16);
+                       dum->port_status &= ~USB_PORT_STAT_RESET;
                        dum->re_timeout = 0;
                        if (dum->driver) {
                                dum->port_status |= USB_PORT_STAT_ENABLE;
@@ -1540,10 +1537,9 @@ static int dummy_hub_control (
        case SetPortFeature:
                switch (wValue) {
                case USB_PORT_FEAT_SUSPEND:
-                       if ((dum->port_status & (1 << USB_PORT_FEAT_SUSPEND))
+                       if ((dum->port_status & USB_PORT_STAT_SUSPEND)
                                        == 0) {
-                               dum->port_status |=
-                                               (1 << USB_PORT_FEAT_SUSPEND);
+                               dum->port_status |= USB_PORT_STAT_SUSPEND;
                                if (dum->driver && dum->driver->suspend) {
                                        spin_unlock (&dum->lock);
                                        dum->driver->suspend (&dum->gadget);