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| author | Alan Stern <stern@rowland.harvard.edu> | 2012-01-04 22:36:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-05 01:04:30 +0100 |
| commit | d8cae98cddd286e38db1724dda1b0e7b467f9237 (patch) | |
| tree | 83de956f0281814254ec22119de6ed6a6d3f2b66 /Documentation/usb | |
| parent | usb: usb-storage doesn't support dynamic id currently, the patch disables the... (diff) | |
| download | linux-d8cae98cddd286e38db1724dda1b0e7b467f9237.tar.xz linux-d8cae98cddd286e38db1724dda1b0e7b467f9237.zip | |
USB: update documentation for usbmon
The documentation for usbmon is out of date; the usbfs "devices" file
now exists in /sys/kernel/debug/usb rather than /proc/bus/usb. This
patch (as1505) updates the documentation accordingly, and also
mentions that the necessary information can be found by running lsusb.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Pete Zaitcev <zaitcev@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/usbmon.txt | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/Documentation/usb/usbmon.txt b/Documentation/usb/usbmon.txt index a4efa0462f05..5335fa8b06eb 100644 --- a/Documentation/usb/usbmon.txt +++ b/Documentation/usb/usbmon.txt @@ -47,10 +47,11 @@ This allows to filter away annoying devices that talk continuously. 2. Find which bus connects to the desired device -Run "cat /proc/bus/usb/devices", and find the T-line which corresponds to -the device. Usually you do it by looking for the vendor string. If you have -many similar devices, unplug one and compare two /proc/bus/usb/devices outputs. -The T-line will have a bus number. Example: +Run "cat /sys/kernel/debug/usb/devices", and find the T-line which corresponds +to the device. Usually you do it by looking for the vendor string. If you have +many similar devices, unplug one and compare the two +/sys/kernel/debug/usb/devices outputs. The T-line will have a bus number. +Example: T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 @@ -58,7 +59,10 @@ P: Vendor=0557 ProdID=2004 Rev= 1.00 S: Manufacturer=ATEN S: Product=UC100KM V2.00 -Bus=03 means it's bus 3. +"Bus=03" means it's bus 3. Alternatively, you can look at the output from +"lsusb" and get the bus number from the appropriate line. Example: + +Bus 003 Device 002: ID 0557:2004 ATEN UC100KM V2.00 3. Start 'cat' |