linux-kernel - Re: [PATCH v8 1/6] software node: rename is_array to is

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: <ef1eb8d9-92f3-a4e4-f8d2-a2e247737c97@samsung.com>
Date:   Fri, 13 Dec 2019 07:47:12 +0100
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Samsung SOC <linux-samsung-soc@...r.kernel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Felipe Balbi <balbi@...nel.org>,
        Linux USB Mailing List <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v8 1/6] software node: rename is_array to is_inline

Hi Rafael,

On 12.12.2019 17:41, Rafael J. Wysocki wrote:
> On Thu, Dec 12, 2019 at 12:28 PM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
>> On Thu, Dec 12, 2019 at 12:12:36PM +0100, Marek Szyprowski wrote:
>>> On 08.11.2019 05:22, Dmitry Torokhov wrote:
>>>> We do not need a special flag to know if we are dealing with an array,
>>>> as we can get that data from ratio between element length and the data
>>>> size, however we do need a flag to know whether the data is stored
>>>> directly inside property_entry or separately.
>>>>
>>>> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
>>> Today I've noticed that this patch got merged to linux-next as commit
>>> e6bff4665c595b5a4aff173848851ed49ac3bfad. Sadly it breaks DWC3/xHCI
>>> driver operation on Samsung Exynos5 SoCs (and probably on other SoCs
>>> which use DWC3 in host mode too). I get the following errors during boot:
>>>
>>> dwc3 12000000.dwc3: failed to add properties to xHCI
>>> dwc3 12000000.dwc3: failed to initialize host
>>> dwc3: probe of 12000000.dwc3 failed with error -61
>>>
>>> Here is a full kernel log from Exynos5250-based Snow Chromebook on KernelCI:
>>>
>>> https://storage.kernelci.org/next/master/next-20191212/arm/exynos_defconfig/gcc-8/lab-collabora/boot-exynos5250-snow.txt
>>>
>>> (lack of 'ref' clk is not related nor fatal to the driver operation).
>>>
>>> The code which fails after this patch is located in
>>> drivers/usb/dwc3/host.c. Let me know if I can help more in locating the bug.
>> Thank you for report.
>>
>> I think we should not have that patch in the fist place... I used to have
>> a bad feeling about it and then forgot about it existence.
> Well, I think you mean the [2/6].
>
> The $subject one really shouldn't change functionality, we must have
> missed something here.

Nope, I was really talking about [1/6]. It looks that it revealed an 
issue in the DWC3 driver pointed by Dmitry.

> Anyway, I'll drop this branch from the linux-next one for now.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland