umcs (4-Port-USB-serial) triggering way too much ehci IRQs

[Harald Schmalzbauer]

 Bezüglich Lev Serebryakov's Nachricht vom 17.09.2013 10:44 (localtime):
> Hello, Hans.
> You wrote 17 сентября 2013 г., 9:14:17:
>
> HPS> Check using usbdump -i usbusX -f Y -s 65536 -vvv
> HPS> what is going on. Maybe some USB transfers are returning zero length data from the chip.
>  Ok, I got 500 irq/s here from my device, so, I have same problem, as
>  topicstarter. My usbdump (9-STABLE) doesn't understand '-f Y', without

The Y is the device addr @ bus #X.

Same posted some seconds ago :-)

Thanks,

-Harry

>  filter I get:
>
> 12:42:58.929604 usbus3.2 SUBM-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=0,IVAL=2
>  frame[0] READ 16 bytes
>  flags 0xa <SHORT_XFER_OK|PIPE_BOF|0>
>  status 0xeb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0>
> 12:42:58.931601 usbus3.2 DONE-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=8,IVAL=2,ERR=0
>  frame[0] READ 5 bytes
>  0000  C1 01 01 01 55 -- -- --  -- -- -- -- -- -- -- --  |....U           |
>  flags 0xa <SHORT_XFER_OK|PIPE_BOF|0>
>  status 0xcb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOING_CALLBACK|0>
> 12:42:58.931607 usbus3.2 SUBM-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=0,IVAL=2
>  frame[0] READ 16 bytes
>  flags 0xa <SHORT_XFER_OK|PIPE_BOF|0>
>  status 0xcb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOING_CALLBACK|0>
> 12:42:58.933601 usbus3.2 DONE-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=8,IVAL=2,ERR=0
>  frame[0] READ 5 bytes
>  0000  C1 01 01 01 55 -- -- --  -- -- -- -- -- -- -- --  |....U           |
>  flags 0xa <SHORT_XFER_OK|PIPE_BOF|0>
>  status 0xeb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0>
> 12:42:58.933610 usbus3.2 SUBM-INTR-EP=00000089,SPD=HIGH,NFR=1,SLEN=0,IVAL=2
>  frame[0] READ 16 bytes
>  flags 0xa <SHORT_XFER_OK|PIPE_BOF|0>
>  status 0xeb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0>
>
>


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Harald Schmalzbauer
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