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

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Date:   Thu, 12 Dec 2019 17:41:21 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        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

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:
> > Dear All,
> >
> > 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.

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