[U-Boot] [PATCH] smsc95xx: Use zero length packets when RX fifo is empty

Joe Hershberger joe.hershberger at gmail.com
Mon Sep 14 23:37:29 CEST 2015


Hi Stefan,

On Sun, Sep 13, 2015 at 11:45 AM, Stefan Bruens
<stefan.bruens at rwth-aachen.de> wrote:
> On Tuesday 08 September 2015 08:56:12 Joe Hershberger wrote:
>> On Mon, Sep 7, 2015 at 10:12 PM, Stefan Brüns
>>
>> <stefan.bruens at rwth-aachen.de> wrote:
>> > Using NAKs on empty RX fifo for bulk in transfers is the right choice
>> > for a interrupt driven model, but U-Boot uses polling and expects an
>> > immediate answer if there is no incoming packet. Using ZLP Bulk In
>> > Response
>> > (BIR) mode avoids unexpected timeouts in the host controller driver.
>> >
>> > As ZLP mode is reset default, there is no need to set it.
>> >
>> > Signed-off-by: Stefan Brüns <stefan.bruens at rwth-aachen.de>
>>
>> LGTM.
>>
>> Acked-by: Joe Hershberger <joe.hershberger at ni.com>
>
> Anything I need to do to get this patch and the other ones I sent recently
> included into U-boot?
>
> All pending patches were ACKed.

Any that are bugs that affect existing devices will be considered. All
enhancements will wait until next time the merge window opens.

See http://www.denx.de/wiki/U-Boot/ReleaseCycle

Cheers,
-Joe


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