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authorJiri Kosina <jkosina@suse.cz>2014-11-20 13:42:02 (GMT)
committerJiri Kosina <jkosina@suse.cz>2014-11-20 13:42:02 (GMT)
commita02001086bbfb4da35d1228bebc2f1b442db455f (patch)
tree62ab47936cef06fd08657ca5b6cd1df98c19be57 /Documentation/usb
parenteff264efeeb0898408e8c9df72d8a32621035bed (diff)
parentfc14f9c1272f62c3e8d01300f52467c0d9af50f9 (diff)
Merge Linus' tree to be be to apply submitted patches to newer code than
current trivial.git base
Diffstat (limited to 'Documentation/usb')
-rw-r--r--Documentation/usb/WUSB-Design-overview.txt23
-rw-r--r--Documentation/usb/hotplug.txt2
2 files changed, 8 insertions, 17 deletions
diff --git a/Documentation/usb/WUSB-Design-overview.txt b/Documentation/usb/WUSB-Design-overview.txt
index 1cd07c01..fdb47637 100644
--- a/Documentation/usb/WUSB-Design-overview.txt
+++ b/Documentation/usb/WUSB-Design-overview.txt
@@ -161,19 +161,10 @@ now on), such as to start/stop beaconing, scan, allocate bandwidth, etc.
The main building block here is the UWB device (struct uwb_dev). For
each device that pops up in radio presence (ie: the UWB host receives a
beacon from it) you get a struct uwb_dev that will show up in
-/sys/class/uwb and in /sys/bus/uwb/devices.
+/sys/bus/uwb/devices.
-For each RC that is detected, a new struct uwb_rc is created. In turn, a
-RC is also a device, so they also show in /sys/class/uwb and
-/sys/bus/uwb/devices, but at the same time, only radio controllers show
-up in /sys/class/uwb_rc.
-
- *
-
- [*] The reason for RCs being also devices is that not only we can
- see them while enumerating the system device tree, but also on the
- radio (their beacons and stuff), so the handling has to be
- likewise to that of a device.
+For each RC that is detected, a new struct uwb_rc and struct uwb_dev are
+created. An entry is also created in /sys/class/uwb_rc for each RC.
Each RC driver is implemented by a separate driver that plugs into the
interface that the UWB stack provides through a struct uwb_rc_ops. The
@@ -246,7 +237,7 @@ the beacon cache of dead devices].
Device lists
-All UWB devices are kept in the list of the struct bus_type uwb_bus.
+All UWB devices are kept in the list of the struct bus_type uwb_bus_type.
Bandwidth allocation
@@ -317,7 +308,7 @@ HC picks the /DN_Connect/ out (nep module sends to notif.c for delivery
into /devconnect/). This process starts the authentication process for
the device. First we allocate a /fake port/ and assign an
unauthenticated address (128 to 255--what we really do is
-0x80 | fake_port_idx). We fiddle with the fake port status and /khubd/
+0x80 | fake_port_idx). We fiddle with the fake port status and /hub_wq/
sees a new connection, so he moves on to enable the fake port with a reset.
So now we are in the reset path -- we know we have a non-yet enumerated
@@ -326,7 +317,7 @@ device with an unauthorized address; we ask user space to authenticate
exchange (FIXME: not yet done) and issue a /set address 0/ to bring the
device to the default state. Device is authenticated.
-From here, the USB stack takes control through the usb_hcd ops. khubd
+From here, the USB stack takes control through the usb_hcd ops. hub_wq
has seen the port status changes, as we have been toggling them. It will
start enumerating and doing transfers through usb_hcd->urb_enqueue() to
read descriptors and move our data.
@@ -340,7 +331,7 @@ Keep Alive IE; it responds with a /DN_Alive/ pong during the DNTS (this
arrives to us as a notification through
devconnect.c:wusb_handle_dn_alive(). If a device times out, we
disconnect it from the system (cleaning up internal information and
-toggling the bits in the fake hub port, which kicks khubd into removing
+toggling the bits in the fake hub port, which kicks hub_wq into removing
the rest of the stuff).
This is done through devconnect:__wusb_check_devs(), which will scan the
diff --git a/Documentation/usb/hotplug.txt b/Documentation/usb/hotplug.txt
index a80b0e9..5b243f3 100644
--- a/Documentation/usb/hotplug.txt
+++ b/Documentation/usb/hotplug.txt
@@ -58,7 +58,7 @@ USB POLICY AGENT
The USB subsystem currently invokes /sbin/hotplug when USB devices
are added or removed from system. The invocation is done by the kernel
-hub daemon thread [khubd], or else as part of root hub initialization
+hub workqueue [hub_wq], or else as part of root hub initialization
(done by init, modprobe, kapmd, etc). Its single command line parameter
is the string "usb", and it passes these environment variables:

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