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Commit 131dec34 authored by Sarah Sharp's avatar Sarah Sharp
Browse files

USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol. 



USB_PORT_STAT_SUPER_SPEED is a made up symbol that the USB core used to
track whether USB ports had a SuperSpeed device attached.  This is a
linux-internal symbol that was used when SuperSpeed and non-SuperSpeed
devices would show up under the same xHCI roothub.  This particular
port status is never returned by external USB 3.0 hubs.  (Instead they
have a USB_PORT_STAT_SPEED_5GBPS that uses a completely different speed
mask.)

Now that the xHCI driver registers two roothubs, USB 3.0 devices will only
show up under USB 3.0 hubs.  Rip out USB_PORT_STAT_SUPER_SPEED and replace
it with calls to hub_is_superspeed().

Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent c6cc27c7

drivers/usb/core/hub.c

+8 −28
Original line number Diff line number Diff line
@@ -155,14 +155,14 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); 


static int usb_reset_and_verify_device(struct usb_device *udev);



static inline char *portspeed(int portstatus)

static inline char *portspeed(struct usb_hub *hub, int portstatus)

{

	if (hub_is_superspeed(hub->hdev))

		return "5.0 Gb/s";

	if (portstatus & USB_PORT_STAT_HIGH_SPEED)

    		return "480 Mb/s";

	else if (portstatus & USB_PORT_STAT_LOW_SPEED)

		return "1.5 Mb/s";

	else if (portstatus & USB_PORT_STAT_SUPER_SPEED)

		return "5.0 Gb/s";

	else

		return "12 Mb/s";

}
@@ -385,9 +385,6 @@ static int hub_port_status(struct usb_hub *hub, int port1, 
			u16 tmp = *status & USB_SS_PORT_STAT_MASK;

			if (*status & USB_SS_PORT_STAT_POWER)

				tmp |= USB_PORT_STAT_POWER;

			if ((*status & USB_SS_PORT_STAT_SPEED) ==

					USB_PORT_STAT_SPEED_5GBPS)

				tmp |= USB_PORT_STAT_SUPER_SPEED;

			*status = tmp;

		}
@@ -795,12 +792,8 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) 
			 * USB3 protocol ports will automatically transition

			 * to Enabled state when detect an USB3.0 device attach.

			 * Do not disable USB3 protocol ports.

			 * FIXME: USB3 root hub and external hubs are treated

			 * differently here.

			 */

			if (hdev->descriptor.bDeviceProtocol != 3 ||

			    (!hdev->parent &&

			     !(portstatus & USB_PORT_STAT_SUPER_SPEED))) {

			if (!hub_is_superspeed(hdev)) {

				clear_port_feature(hdev, port1,

						   USB_PORT_FEAT_ENABLE);

				portstatus &= ~USB_PORT_STAT_ENABLE;
@@ -2067,14 +2060,12 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, 
		    (portstatus & USB_PORT_STAT_ENABLE)) {

			if (hub_is_wusb(hub))

				udev->speed = USB_SPEED_WIRELESS;

			else if (portstatus & USB_PORT_STAT_SUPER_SPEED)

			else if (hub_is_superspeed(hub->hdev))

				udev->speed = USB_SPEED_SUPER;

			else if (portstatus & USB_PORT_STAT_HIGH_SPEED)

				udev->speed = USB_SPEED_HIGH;

			else if (portstatus & USB_PORT_STAT_LOW_SPEED)

				udev->speed = USB_SPEED_LOW;

			else if (portstatus & USB_PORT_STAT_SUPER_SPEED)

				udev->speed = USB_SPEED_SUPER;

			else

				udev->speed = USB_SPEED_FULL;

			return 0;
@@ -3067,7 +3058,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, 


	dev_dbg (hub_dev,

		"port %d, status %04x, change %04x, %s\n",

		port1, portstatus, portchange, portspeed (portstatus));

		port1, portstatus, portchange, portspeed(hub, portstatus));



	if (hub->has_indicators) {

		set_port_led(hub, port1, HUB_LED_AUTO);
@@ -3168,19 +3159,8 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, 
		udev->level = hdev->level + 1;

		udev->wusb = hub_is_wusb(hub);



		/*

		 * USB 3.0 devices are reset automatically before the connect

		 * port status change appears, and the root hub port status

		 * shows the correct speed.  We also get port change

		 * notifications for USB 3.0 devices from the USB 3.0 portion of

		 * an external USB 3.0 hub, but this isn't handled correctly yet

		 * FIXME.

		 */



		if (!(hcd->driver->flags & HCD_USB3))

			udev->speed = USB_SPEED_UNKNOWN;

		else if ((hdev->parent == NULL) &&

				(portstatus & USB_PORT_STAT_SUPER_SPEED))

		/* Only USB 3.0 devices are connected to SuperSpeed hubs. */

		if (hub_is_superspeed(hub->hdev))

			udev->speed = USB_SPEED_SUPER;

		else

			udev->speed = USB_SPEED_UNKNOWN;

drivers/usb/host/xhci-hub.c

+0 −2
Original line number Diff line number Diff line
@@ -155,8 +155,6 @@ static unsigned int xhci_port_speed(unsigned int port_status) 
		return USB_PORT_STAT_LOW_SPEED;

	if (DEV_HIGHSPEED(port_status))

		return USB_PORT_STAT_HIGH_SPEED;

	if (DEV_SUPERSPEED(port_status))

		return USB_PORT_STAT_SUPER_SPEED;

	/*

	 * FIXME: Yes, we should check for full speed, but the core uses that as

	 * a default in portspeed() in usb/core/hub.c (which is the only place

include/linux/usb/ch11.h

+0 −1
Original line number Diff line number Diff line
@@ -109,7 +109,6 @@ struct usb_port_status { 
#define USB_PORT_STAT_TEST              0x0800

#define USB_PORT_STAT_INDICATOR         0x1000

/* bits 13 to 15 are reserved */

#define USB_PORT_STAT_SUPER_SPEED	0x8000	/* Linux-internal */



/*

 * Additions to wPortStatus bit field from USB 3.0