diff options
Diffstat (limited to 'Documentation/usb/error-codes.txt')
| -rw-r--r-- | Documentation/usb/error-codes.txt | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/Documentation/usb/error-codes.txt b/Documentation/usb/error-codes.txt index 867f4c38f35..9cf83e8c27b 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(). @@ -126,7 +126,7 @@ one or more packets could finish before an error stops further endpoint I/O. urb->transfer_flags. -ENODEV Device was removed. Often preceded by a burst of - other errors, since the hub driver does't detect + other errors, since the hub driver doesn't detect device removal events immediately. -EXDEV ISO transfer only partially completed @@ -145,7 +145,7 @@ one or more packets could finish before an error stops further endpoint I/O. hardware problems such as bad devices (including firmware) or cables. (**) This is also one of several codes that different kinds of host -controller use to to indicate a transfer has failed because of device +controller use to indicate a transfer has failed because of device disconnect. In the interval before the hub driver starts disconnect processing, devices may receive such fault reports for every request. @@ -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. |