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| author | Pete Zaitcev <zaitcev@redhat.com> | 2006-09-18 22:49:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-27 11:59:00 -0700 |
| commit | 38e2bfc94e95dd6005fdaf40dfec0157396741da (patch) | |
| tree | 1cc927239e3369ec7ce4920b1347dd8bc504bb2d /Documentation/usb | |
| parent | ec17cf1cfe0b557210b27313bd584e9b5187d4ca (diff) | |
| download | linux-3.10-38e2bfc94e95dd6005fdaf40dfec0157396741da.tar.gz linux-3.10-38e2bfc94e95dd6005fdaf40dfec0157396741da.tar.bz2 linux-3.10-38e2bfc94e95dd6005fdaf40dfec0157396741da.zip | |
USB: Dealias -110 code (more complete)
The purpose of this patch is to split off the case when a device does
not reply on the lower level (which is reported by HC hardware), and
a case when the device accepted the request, but does not reply at
upper level. This redefinition allows to diagnose issues easier,
without asking the user if the -110 happened "immediately".
The usbmon splits such cases already thanks to its timestamp, but
it's not always available.
I adjusted all drivers which I found affected (by searching for "urb").
Out of tree drivers may suffer a little bit, but I do not expect much
breakage. At worst they may print a few messages.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/error-codes.txt | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/Documentation/usb/error-codes.txt b/Documentation/usb/error-codes.txt index 867f4c38f35..39c68f8c4e6 100644 --- a/Documentation/usb/error-codes.txt +++ b/Documentation/usb/error-codes.txt @@ -98,13 +98,13 @@ one or more packets could finish before an error stops further endpoint I/O. error, a failure to respond (often caused by device disconnect), or some other fault. --ETIMEDOUT (**) No response packet received within the prescribed +-ETIME (**) No response packet received within the prescribed bus turn-around time. This error may instead be reported as -EPROTO or -EILSEQ. - Note that the synchronous USB message functions - also use this code to indicate timeout expired - before the transfer completed. +-ETIMEDOUT Synchronous USB message functions use this code + to indicate timeout expired before the transfer + completed, and no other error was reported by HC. -EPIPE (**) Endpoint stalled. For non-control endpoints, reset this status with usb_clear_halt(). @@ -163,6 +163,3 @@ usb_get_*/usb_set_*(): usb_control_msg(): usb_bulk_msg(): -ETIMEDOUT Timeout expired before the transfer completed. - In the future this code may change to -ETIME, - whose definition is a closer match to this sort - of error. |