linux-kernel - Re: [PATCH v2 0/2] leds: bcm63x8: improve read and write functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <f94b922f-b720-1ea1-e1d1-405e7bb475de@gmail.com>
Date:   Wed, 24 Feb 2021 09:43:08 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Álvaro Fernández Rojas <noltari@...il.com>
Cc:     Jonas Gorski <jonas.gorski@...il.com>, Pavel Machek <pavel@....cz>,
        Dan Murphy <dmurphy@...com>, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/2] leds: bcm63x8: improve read and write functions



On 2/24/2021 7:54 AM, Álvaro Fernández Rojas wrote:
> Hi Florian,
> 
>> El 24 feb 2021, a las 16:45, Florian Fainelli <f.fainelli@...il.com> escribió:
>>
>>
>>
>> On 2/24/2021 2:11 AM, Álvaro Fernández Rojas wrote:
>>> This code is proven to work in BMIPS BE/LE and ARM BE/LE.
>>> See bcm2835-rng and bcmgenet.c:
>>> https://github.com/torvalds/linux/blob/3b9cdafb5358eb9f3790de2f728f765fef100731/drivers/char/hw_random/bcm2835-rng.c#L42-L60
>>> https://github.com/torvalds/linux/blob/3b9cdafb5358eb9f3790de2f728f765fef100731/drivers/net/ethernet/broadcom/genet/bcmgenet.c#L71-L88
>>
>> What is the motivation for doing this? bcm2835-rng and bcmgenet are used
>> across MIPS and ARM platforms therefore they need to be compatible with
>> both, but these two LEDs drivers are super specialized, are you working
>> on porting the 6328 LED driver to the newer ARM-based DSL SoCs such as
>> 63138 and 63148?
> 
> I just wanted to have all bmips drivers in line (at least regarding read/write).
> If I remember correctly someone told me that this controller was also present on some little endian SoCs, but you can confirm that :).
> Unfortunately I haven’t got any devices with ARM-based DSL SoCs, so the answer is no.

The 6328 LED controller could be utilized on the ARM-based DSL SoCs,
however 6358 will not, so changing the I/O accessors for that driver
sounds like just code churn to me.
-- 
Florian