Em Sun, 16 Apr 2017 10:39:58 -0400 (EDT) Alan Stern stern@rowland.harvard.edu escreveu:

On Sun, 16 Apr 2017, Mauro Carvalho Chehab wrote:

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The /proc/bus/usb/devices got moved to sysfs. It is now sitting at: /sys/kernel/debug/usb/devices

Fix the old references at the USB documentation

Many of the things you changed are still out of date.

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Signed-off-by: Mauro Carvalho Chehab mchehab@s-opensource.com

Documentation/driver-api/usb/usb.rst | 14 +++++++------- Documentation/usb/acm.txt | 2 +- Documentation/usb/gadget_serial.txt | 4 ++-- Documentation/usb/proc_usb_info.txt | 20 ++++++++++---------- 4 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/Documentation/driver-api/usb/usb.rst b/Documentation/driver-api/usb/usb.rst index 6824089ef4c8..036e77038d42 100644 --- a/Documentation/driver-api/usb/usb.rst +++ b/Documentation/driver-api/usb/usb.rst @@ -233,7 +233,7 @@ What files are in "usbfs"?

Conventionally mounted at ``/proc/bus/usb``, usbfs features include:

This whole section is highly misleading. usbfs no longer exists as a filesystem. Instead, the files which used to be part of usbfs have either moved to debugfs (/sys/kernel/debug/usb/devices) or are character device nodes managed by systemctl/udev and typically created under /dev/bus/usb.

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@@ -299,23 +299,23 @@ invocations of *mount*, are: 0)

*listgid*\ =NNNNN

• Controls the GID used for the /proc/bus/usb/devices and drivers

• Controls the GID used for the /sys/kernel/debug/usb/devices and drivers files. (Default: 0)

*listmode*\ =MMM

• Controls the file mode used for the /proc/bus/usb/devices and

• Controls the file mode used for the /sys/kernel/debug/usb/devices and drivers files. (Default: 0444)

*listuid*\ =NNNNN

• Controls the UID used for the /proc/bus/usb/devices and drivers

• Controls the UID used for the /sys/kernel/debug/usb/devices and drivers files. (Default: 0)

Note that many Linux distributions hard-wire the mount options for usbfs in their init scripts, such as ``/etc/rc.d/rc.sysinit``, rather than making it easy to set this per-system policy in ``/etc/fstab``.

This is all totally out of date. usbfs is no longer a filesystem that can be mounted.

True. Sent already a new patchset covering it, and other places where /proc/bus/bus are mentioned.

Besides the stuff already fixed, there are still a few other bits to address:

Documentation/usb/proc_usb_info.txt:/proc/bus/usb filesystem output Documentation/usb/proc_usb_info.txt:/proc/bus/usb. It provides the /sys/kernel/debug/usb/devices file, as well as Documentation/usb/proc_usb_info.txt:the /proc/bus/usb/BBB/DDD files. Documentation/usb/proc_usb_info.txt:**NOTE**: If /proc/bus/usb appears empty, and a host controller Documentation/usb/proc_usb_info.txt: mount -t usbfs none /proc/bus/usb Documentation/usb/proc_usb_info.txt: none /proc/bus/usb usbfs defaults 0 0 Documentation/usb/proc_usb_info.txt:THE /proc/bus/usb/BBB/DDD FILES: Documentation/usb/proc_usb_info.txt:devices. You would open the /proc/bus/usb/BBB/DDD file read/write,

This should likely be merged at usb.rst file or fully reworked.

include/uapi/linux/capability.h:/* Allow sending USB messages to any device via /proc/bus/usb */ include/uapi/linux/usb/ch9.h: * not other descriptors) are read from usbfs (i.e. /proc/bus/usb/BBB/DDD);

I'll address this on a version 4.

sound/usb/usx2y/us122l.c: sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm", sound/usb/usx2y/usX2Yhwdep.c: sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum); sound/usb/usx2y/usx2yhwdeppcm.c: sprintf(hw->name, "/proc/bus/usb/%03d/%03d/hwdeppcm", dev->bus->busnum, dev->devnum);

Not sure about the above.

Regards, Mauro