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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2011-04-05 15:53:47 -0700
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2011-05-25 16:03:14 -0700
commitf444ff27e9b8c953eef49da65c649fdcd202165a (patch)
tree2741ff07ed418641a075a66354a216627fe6e84a /arch/x86/tools
parent5153b7b39105d8beb38e1c3f26ab4b877960d8e1 (diff)
xhci: STFU: Be quieter during URB submission and completion.
Unsurprisingly, URBs get submitted and completed a lot in the xHCI driver. If we have to print 10 lines of debug for every URB submitted or completed, then that can cause the whole system to stay in the interrupt handler too long, and can cause Missed Service completion codes for isochronous transfers. Cut down the debugging in the URB submission and completion paths: - Don't squawk about successful transfers, only unsuccessful ones. - Only print the number of bytes transferred if this was a short transfer. - Don't print the endpoint index for successful transfers (will add more debug to failed transfers to show endpoint index there later). - Stop printing MMIO writes. This debugging shows up when the endpoint doorbell is rung a to start a transfer (basically for every URB). - Don't print out the ring enqueue and dequeue pointers - Stop printing when we're pointing to a link TRB. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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