linux-kernel - Re: [PATCH v2 0/8] gpio: exar: refactor the driver

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

Message-ID: <CAHp75Ve0vMzK43QCqNxMwT6UpUESkbCvbvE3Ld=RZQd3bmJZpA@mail.gmail.com>
Date:   Wed, 4 Nov 2020 22:36:59 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jan Kiszka <jan.kiszka@...mens.com>,
        David Laight <David.Laight@...lab.com>,
        Mark Brown <broonie@...nel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v2 0/8] gpio: exar: refactor the driver

On Wed, Nov 4, 2020 at 9:34 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:
>
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
>
> I just wanted to convert the driver to using simpler IDA API but ended up
> quickly converting it to using regmap. Unfortunately I don't have the HW
> to test it so marking the patches that introduce functional change as RFT
> and Cc'ing the original author.
>
> v1 -> v2:
> - add new regmap helper: regmap_assign_bits()
> - fix lvl vs sel register access
> - set value in direction_output callback
>
> Note: I didn't use the fancy method of offset calculation Andy and David
> suggested because this series broke the driver according to Jan - let's
> get it right before we modify it any more. I found a couple problems that
> could maybe cause the crash. Jan: could you give it another spin?

I would suggest perform two tests:
 a) full set
 b) with last two patches reverted / not being applied

In that case if the series is still broken we may go with cleanups first.

>
> Bartosz Golaszewski (8):
>   regmap: provide regmap_assign_bits()
>   gpio: exar: add a newline after the copyright notice
>   gpio: exar: include idr.h
>   gpio: exar: switch to a simpler IDA interface
>   gpio: exar: use a helper variable for &pdev->dev
>   gpio: exar: unduplicate address and offset computation
>   gpio: exar: switch to using regmap
>   gpio: exar: use devm action for freeing the IDA and drop remove()
>
>  drivers/gpio/Kconfig     |   1 +
>  drivers/gpio/gpio-exar.c | 151 +++++++++++++++++++--------------------
>  include/linux/regmap.h   |  16 +++++
>  3 files changed, 90 insertions(+), 78 deletions(-)
>
> --
> 2.29.1
>


-- 
With Best Regards,
Andy Shevchenko