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Message-ID: <CAL_Jsq+bs1mxdTTeazhzD39fV0EBjCKZ_HKKjLpWgSezTLJ-4A@mail.gmail.com>
Date:   Thu, 9 Mar 2023 07:28:59 -0600
From:   Rob Herring <robh@...nel.org>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michael Walle <michael@...le.cc>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Robert Marko <robert.marko@...tura.hr>,
        Luka Perkov <luka.perkov@...tura.hr>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Frank Rowand <frowand.list@...il.com>,
        devicetree@...r.kernel.org,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Wolfram Sang <wsa@...nel.org>, Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v2 03/21] of: Rename of_modalias_node()

On Wed, Mar 8, 2023 at 4:06 PM Sebastian Reichel
<sebastian.reichel@...labora.com> wrote:
>
> Hi,
>
> On Tue, Mar 07, 2023 at 06:19:03PM -0600, Rob Herring wrote:
> > On Tue, Mar 07, 2023 at 05:53:41PM +0100, Miquel Raynal wrote:
> > > This helper does not produce a real modalias, but tries to get the
> > > "product" compatible part of the "vendor,product" compatibles only. It
> > > is far from creating a purely useful modalias string and does not seem
> > > to be used like that directly anyway, so let's try to give this helper a
> > > more meaningful name before moving there a real modalias helper (already
> > > existing under of/device.c).
> > >
> > > Also update the various documentations to refer to the strings as
> > > "aliases" rather than "modaliases" which has a real meaning in the Linux
> > > kernel.
> > >
> > > There is no functional change.
> > >
> > > Cc: Rafael J. Wysocki <rafael@...nel.org>
> > > Cc: Len Brown <lenb@...nel.org>
> > > Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> > > Cc: Maxime Ripard <mripard@...nel.org>
> > > Cc: Thomas Zimmermann <tzimmermann@...e.de>
> > > Cc: Sebastian Reichel <sre@...nel.org>
> > > Cc: Wolfram Sang <wsa@...nel.org>
> > > Cc: Mark Brown <broonie@...nel.org>
> > > Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
> > > ---
> > >  drivers/acpi/bus.c                |  7 ++++---
> > >  drivers/gpu/drm/drm_mipi_dsi.c    |  2 +-
> > >  drivers/hsi/hsi_core.c            |  2 +-
> >
> > These should not have been using this function. The matching on just the
> > product was a relic from I2C and SPI which we don't want to propogate.
> > No clue why ACPI needed it...
> >
> > If you respin or want to fixup while applying, can you add a kerneldoc
> > comment to not add new users of the function. Not that anyone will
> > follow that... :(
> >
> > Reviewed-by: Rob Herring <robh@...nel.org>
>
> I just checked and HSI is not using the data for matching. Instead
> it uses the returned data to set the device name. Matching happens
> using the full compatible.
>
> FWIW the MIPI HSI standard never became a big thing, so we have only
> one HSI DT driver upstream and that is the Nokia N900 modem driver.

Can we add a patch in removing the call then.

I'm pretty sure MIPI stands for Must Invent Peripheral Interfaces.

Rob

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