[haiku-bugs] [Haiku] #10915: UHCI Short Packet Detect Not Enabled for Control Pipes
- From: "akshay1994" <trac@xxxxxxxxxxxx>
- Date: Sat, 07 Jun 2014 12:14:45 -0000
#10915: UHCI Short Packet Detect Not Enabled for Control Pipes
-------------------------+------------------------------
Reporter: akshay1994 | Owner: mmlr
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/USB | Version: R1/Development
Keywords: USB UHCI | Blocked By:
Blocking: | Has a Patch: 0
Platform: All |
-------------------------+------------------------------
UHCI Short Packet Detect (SPD) is not enabled for Control Pipes.
Since, while processing transfers in the Finish-Thread, we check for this,
before checking for a short packet, short packet control transfers would
hang indefinitely, always coming out as Active, although the Host
Controller has retired them.
You can repeat this behaviour, by making a control transfer request,
asking for any descriptor, with length set to a value greater than the
length of the descriptor (atleast by 7 in my case, else the next TD is
status stage, and it succeeds).
--
Ticket URL: <https://dev.haiku-os.org/ticket/10915>
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