[U-Boot] [PATCH] usb: ohci: change the NUM_EDs from 8 to 32

[Zengtao (B)]

Hi Marek:

>-----Original Message-----
>From: Marek Vasut [mailto:marex at denx.de]
>Sent: Friday, June 29, 2018 4:50 PM
>To: Zengtao (B) <prime.zeng at hisilicon.com>
>Cc: u-boot at lists.denx.de
>Subject: Re: [PATCH] usb: ohci: change the NUM_EDs from 8 to 32
>
>On 06/28/2018 07:54 PM, Zeng Tao wrote:
>> For ohci, the maximam supported endpoint number is 32(in and out), and
>> now we have used (usb_pipeendpoint(pipe) << 1) to index the specified
>> endpoint descritor, usb_pipeendpoint(pipe) can reach 0xf, so we need
>> change the NUM_EDs from 8 to 32.
>>
>> Signed-off-by: Zeng Tao <prime.zeng at hisilicon.com>
>> ---
>>  drivers/usb/host/ohci.h | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index
>> 2350831..fba78dc 100644
>> --- a/drivers/usb/host/ohci.h
>> +++ b/drivers/usb/host/ohci.h
>> @@ -359,7 +359,7 @@ typedef struct
>>  } urb_priv_t;
>>  #define URB_DEL 1
>>
>> -#define NUM_EDS 8		/* num of preallocated endpoint descriptors */
>> +#define NUM_EDS 32		/* num of preallocated endpoint
>descriptors */
>>
>>  #define NUM_TD 64		/* we need more TDs than EDs */
>
>Is this a bugfix for some recent patch ?

Yes, this is a bugfix, but the issue is introduced more than 10years ago.

>
>--
>Best regards,
>Marek Vasut