[U-Boot] Question: issues for usb keyboard work with OHCI HCD

[Marek Vasut <marex@denx.de>]

Dear Bo Shen,

> Hi All,
> 
> On 5/6/2013 11:01, Bo Shen wrote:
> > Hi Marek,
> > 
> > On 5/3/2013 21:40, Marek Vasut wrote:
> >> Dear Bo Shen,
> >> 
> >>> Hi All,
> >>> 
> >>>     Now, I test usb host support with Atmel boards, for example,
> >>> 
> >>> at91sam9x5ek board.
> >>> 
> >>>     When test OHCI USB host with usb keyboard. I meet the following
> >>> 
> >>> issue.
> >>> --->8---
> >>> U-Boot 2013.04-dirty (May 03 2013 - 11:00:34)
> >>> 
> >>> CPU: AT91SAM9G35
> >>> Crystal frequency:       12 MHz
> >>> CPU clock        :      400 MHz
> >>> Master clock     :  133.333 MHz
> >>> DRAM:  128 MiB
> >>> WARNING: Caches not enabled
> >>> NAND:  256 MiB
> >>> MMC:   mci: 0
> >>> In:    serial
> >>> Out:   serial
> >>> Err:   serial
> >>> Net:   macb0
> >>> Hit any key to stop autoboot:  0
> >>> U-Boot> usb start
> >>> (Re)start USB...
> >>> USB0:   scanning bus 0 for devices... 2 USB Device(s) found
> >>> 
> >>>          scanning usb for storage devices... 0 Storage Device(s) found
> >>> 
> >>> U-Boot> setenv stdin usbkbd
> >>> U-Boot> ERROR: sohci_submit_job: ENOMEM
> >>> ERROR: sohci_submit_job failed
> >>> ... ...
> >>> (repeat to print these two error line)
> >> 
> >> So the USB subsystem is leaking memory? Or do you only have too small
> >> MALLOC
> >> area?
> > 
> > I am not sure whether USB subsystem is leaking memory. I am digging it.
> > 
> > This issue is not relative with MALLOC area.
> > This issue come out when all ptd[i].usb_dev (the maximum value of i is
> > 64) is not NULL. Each time to call td_alloc, it will check whether
> > ptd[i].usb_dev is NULL (i from 0 to 63), if not find one of
> > ptd[i].usb_dev is NULL, then report ENOMEM.
> 
> All clue for this issue?

I assume you mean the TDs are all used up then? Are they not free'd ?

Best regards,
Marek Vasut