USB: Remove remnants of Wireless USB and UWB

Wireless USB has long been defunct, and kernel support for it was
removed in 2020 by commit caa6772db4c1 ("Staging: remove wusbcore and
UWB from the kernel tree.").

Nevertheless, some vestiges of the old implementation still clutter up
the USB subsystem and one or two other places.  Let's get rid of them
once and for all.

The only parts still left are the user-facing APIs in
include/uapi/linux/usb/ch9.h.  (There are also a couple of misleading
instances, such as the Sierra Wireless USB modem, which is a USB modem
made by Sierra Wireless.)

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/b4f2710f-a2de-4fb0-b50f-76776f3a961b@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 1 insertions, 29 deletions

diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 969e7dba6358..c93b410b314a 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -3,7 +3,7 @@
  * This file holds USB constants and structures that are needed for
  * USB device APIs.  These are used by the USB device model, which is
  * defined in chapter 9 of the USB 2.0 specification and in the
- * Wireless USB 1.0 (spread around).  Linux has several APIs in C that
+ * Wireless USB 1.0 spec (now defunct).  Linux has several APIs in C that
  * need these:
  *
  * - the host side Linux-USB kernel driver API;
@@ -14,9 +14,6 @@
  * act either as a USB host or as a USB device.  That means the host and
  * device side APIs benefit from working well together.
  *
- * There's also "Wireless USB", using low power short range radios for
- * peripheral interconnection but otherwise building on the USB framework.
- *
  * Note all descriptors are declared '__attribute__((packed))' so that:
  *
  * [a] they never get padded, either internally (USB spec writers
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 07531c4f4350..6014340ba980 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -450,29 +450,6 @@ static inline struct usb_composite_driver *to_cdriver(
  *
  * One of these devices is allocated and initialized before the
  * associated device driver's bind() is called.
- *
- * OPEN ISSUE:  it appears that some WUSB devices will need to be
- * built by combining a normal (wired) gadget with a wireless one.
- * This revision of the gadget framework should probably try to make
- * sure doing that won't hurt too much.
- *
- * One notion for how to handle Wireless USB devices involves:
- *
- * (a) a second gadget here, discovery mechanism TBD, but likely
- *     needing separate "register/unregister WUSB gadget" calls;
- * (b) updates to usb_gadget to include flags "is it wireless",
- *     "is it wired", plus (presumably in a wrapper structure)
- *     bandgroup and PHY info;
- * (c) presumably a wireless_ep wrapping a usb_ep, and reporting
- *     wireless-specific parameters like maxburst and maxsequence;
- * (d) configurations that are specific to wireless links;
- * (e) function drivers that understand wireless configs and will
- *     support wireless for (additional) function instances;
- * (f) a function to support association setup (like CBAF), not
- *     necessarily requiring a wireless adapter;
- * (g) composite device setup that can create one or more wireless
- *     configs, including appropriate association setup support;
- * (h) more, TBD.
  */
 struct usb_composite_dev {
 	struct usb_gadget		*gadget;
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 4e9623e8492b..61d4f0b793dc 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -154,7 +154,6 @@ struct usb_hcd {
 	/* The next flag is a stopgap, to be removed when all the HCDs
 	 * support the new root-hub polling mechanism. */
 	unsigned		uses_new_polling:1;
-	unsigned		wireless:1;	/* Wireless USB HCD */
 	unsigned		has_tt:1;	/* Integrated TT in root hub */
 	unsigned		amd_resume_bug:1; /* AMD remote wakeup quirk */
 	unsigned		can_do_streams:1; /* HC supports streams */
@@ -249,7 +248,6 @@ struct hc_driver {
 #define	HCD_SHARED	0x0004		/* Two (or more) usb_hcds share HW */
 #define	HCD_USB11	0x0010		/* USB 1.1 */
 #define	HCD_USB2	0x0020		/* USB 2.0 */
-#define	HCD_USB25	0x0030		/* Wireless USB 1.0 (USB 2.5)*/
 #define	HCD_USB3	0x0040		/* USB 3.0 */
 #define	HCD_USB31	0x0050		/* USB 3.1 */
 #define	HCD_USB32	0x0060		/* USB 3.2 */