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: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
drivers/usb/core/hub.c | 36 ++++++++----------------------------
drivers/usb/host/xhci-hub.c | 2 --
include/linux/usb/ch11.h | 1 -
3 files changed, 8 insertions(+), 31 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 5f9932a..eee1498 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -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;
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 770f84c..a78f2eb 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -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
diff --git a/include/linux/usb/ch11.h b/include/linux/usb/ch11.h
index 22afcd3..4ebaf08 100644
--- a/include/linux/usb/ch11.h
+++ b/include/linux/usb/ch11.h
@@ -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
--
1.7.0.4
--
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