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USB: report submission of active URBs

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This patch (as1633) changes slightly the way usbcore handled
submissions of URBs that are already active.  It will now return
-EBUSY rather than -EINVAL, and it will call WARN_ONCE to draw
people's attention to the bug.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2012-11-07 16:35:00 -05:00
committed by Greg Kroah-Hartman
parent 2656a9abcf
commit 2f02bc8af3
2 changed files with 8 additions and 1 deletions
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2
Documentation/usb/error-codes.txt
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@@ -21,6 +21,8 @@ Non-USB-specific:
USB-specific:
-EBUSY The URB is already active.
-ENODEV specified USB-device or bus doesn't exist
-ENOENT specified interface or endpoint does not exist or