Eric Lee / smarc-fsl-linux-kernel

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Commit aacf4a0135a330e68df412a6797a9b9689d8d9a3

Authored by Pete Zaitcev
Committed by Greg Kroah-Hartman
1 parent 7c12414955

usbmon: drop bogus 0t from usbmon.txt 

The example is incorrect: there is no 0t socket (the '1t' format has no
bus number in it). Also, correct the broken sentence for USB Tag.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Showing 1 changed file with 7 additions and 5 deletions Side-by-side Diff

Documentation/usb/usbmon.txt
Diff comments   View file @ aacf4a0
... ... @@ -34,11 +34,12 @@
34 34 Verify that bus sockets are present.
35 35  
36 36 # ls /sys/kernel/debug/usbmon
37   -0s 0t 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u
  37 +0s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u
38 38 #
39 39  
40   -Now you can choose to either use the sockets numbered '0' (to capture packets on
41   -all buses), and skip to step #3, or find the bus used by your device with step #2.
  40 +Now you can choose to either use the socket '0u' (to capture packets on all
  41 +buses), and skip to step #3, or find the bus used by your device with step #2.
  42 +This allows to filter away annoying devices that talk continuously.
42 43  
43 44 2. Find which bus connects to the desired device
44 45  
... ... @@ -99,8 +100,9 @@
99 100  
100 101 Here is the list of words, from left to right:
101 102  
102   -- URB Tag. This is used to identify URBs is normally a kernel mode address
103   - of the URB structure in hexadecimal.
  103 +- URB Tag. This is used to identify URBs, and is normally an in-kernel address
  104 + of the URB structure in hexadecimal, but can be a sequence number or any
  105 + other unique string, within reason.
104 106  
105 107 - Timestamp in microseconds, a decimal number. The timestamp's resolution
106 108 depends on available clock, and so it can be much worse than a microsecond