linux-kernel - Re: [PATCH v2] dt-bindings: connector: Replace BIT macro with generic bit ops

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Date:   Thu, 27 May 2021 15:02:51 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Kyle Tso <kyletso@...gle.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Badhri Jagan Sridharan <badhri@...gle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: connector: Replace BIT macro with
 generic bit ops

On Thu, May 27, 2021 at 07:52:24AM -0500, Rob Herring wrote:
> On Thu, May 27, 2021 at 7:41 AM Greg KH <gregkh@...uxfoundation.org> wrote:
> >
> > On Thu, May 27, 2021 at 08:10:29PM +0800, Kyle Tso wrote:
> > > BIT macro is not defined. Replace it with generic bit operations.
> > >
> > > Fixes: 630dce2810b9 ("dt-bindings: connector: Add SVDM VDO properties")
> > > Signed-off-by: Kyle Tso <kyletso@...gle.com>
> > > ---
> > > Changes since v1:
> > > - re-word the commit message
> > >
> > >  include/dt-bindings/usb/pd.h | 20 ++++++++++----------
> > >  1 file changed, 10 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/include/dt-bindings/usb/pd.h b/include/dt-bindings/usb/pd.h
> > > index fef3ef65967f..cb70b4ceedde 100644
> > > --- a/include/dt-bindings/usb/pd.h
> > > +++ b/include/dt-bindings/usb/pd.h
> > > @@ -163,10 +163,10 @@
> > >  #define UFP_VDO_VER1_2               2
> > >
> > >  /* Device Capability */
> > > -#define DEV_USB2_CAPABLE     BIT(0)
> > > -#define DEV_USB2_BILLBOARD   BIT(1)
> > > -#define DEV_USB3_CAPABLE     BIT(2)
> > > -#define DEV_USB4_CAPABLE     BIT(3)
> > > +#define DEV_USB2_CAPABLE     (1 << 0)
> > > +#define DEV_USB2_BILLBOARD   (1 << 1)
> > > +#define DEV_USB3_CAPABLE     (1 << 2)
> > > +#define DEV_USB4_CAPABLE     (1 << 3)
> >
> > Why not just include the proper .h file instead?
> 
> Because the DT headers can't depend on kernel headers as they get used
> separately.

Lame.  :)