Re: [PATCH net-next 2/2] net: dsa: lan9303: Simplify lan9303_xxx_packet_processing() usage
From: Vivien Didelot
Date: Mon Jul 31 2017 - 10:46:51 EST
Hi Egil,
Egil Hjelmeland <privat@xxxxxxxxxxxxxxxxxx> writes:
>>> + for (p = 0; p <= 2; p++) {
>>
>> Exclusive limits are often prefer, i.e. 'p < 3'.
>>
> OK, that can be nice when I later introduce LAN9303_NUM_PORTS = 3.
This is indeed another reason what exclusive limits are prefered ;-)
>>> + int ret;
>>> +
>>> + ret = lan9303_disable_packet_processing(chip, p);
>>> + if (ret)
>>> + return ret;
>>
>> When any non-zero return code means an error, we usually see 'err'
>> instead of 'ret'.
>>
>
> But 'ret' is used throughout the rest of the file. Is it not better to
> be locally consistent?
You are correct, I was missing a bit of context here.
>>> case 1:
>>> - return lan9303_enable_packet_processing(chip, port);
>>
>> Is this deletion intentional? The commit message does not explain this.
>>
>> When possible, it is appreciated to separate functional from
>> non-functional changes. For example one commit adding the loop in
>> lan9303_disable_processing and another one to not enable/disable packet
>> processing on port 1.
>>
>
> Case fall through, the change is purely non-functional.
>
> You are perhaps thinking of the patch in my first series where I removed
> disable of port 0. I have put that on hold. Juergen says that the
> mainline driver works out of the box for him. So I will investigate
> that problem bit more.
Correct! I misread, my bad. This is indeed cleaner with this patch. With
the LAN9303_NUM_PORTS limit and detailed commit message, the patch LGTM.
Thanks,
Vivien