linux-kernel - Re: [PATCH 03/98] drm.h: use __kernel_size_t instead of size

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Message-ID: <20150830104229.GW9187@lakka.kapsi.fi>
Date:	Sun, 30 Aug 2015 13:42:30 +0300
From:	Mikko Rapeli <mikko.rapeli@....fi>
To:	Emil Velikov <emil.l.velikov@...il.com>
Cc:	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
	ML dri-devel <dri-devel@...ts.freedesktop.org>,
	linux-api@...r.kernel.org
Subject: Re: [PATCH 03/98] drm.h: use __kernel_size_t instead of size_t

On Wed, Jun 03, 2015 at 06:19:48PM +0100, Emil Velikov wrote:
> On 30 May 2015 at 16:37, Mikko Rapeli <mikko.rapeli@....fi> wrote:
> > Fixes userspace compilation error:
> >
> > drm/drm.h:132:2: error: unknown type name ‘size_t’
> >
> > Signed-off-by: Mikko Rapeli <mikko.rapeli@....fi>
> > ---
> >  include/uapi/drm/drm.h | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
> > index ff6ef62..b197650 100644
> > --- a/include/uapi/drm/drm.h
> > +++ b/include/uapi/drm/drm.h
> > @@ -129,11 +129,11 @@ struct drm_version {
> >         int version_major;        /**< Major version */
> >         int version_minor;        /**< Minor version */
> >         int version_patchlevel;   /**< Patch level */
> > -       size_t name_len;          /**< Length of name buffer */
> > +       __kernel_size_t name_len;         /**< Length of name buffer */
> >         char __user *name;        /**< Name of driver */
> > -       size_t date_len;          /**< Length of date buffer */
> > +       __kernel_size_t date_len;         /**< Length of date buffer */
> >         char __user *date;        /**< User-space buffer to hold date */
> > -       size_t desc_len;          /**< Length of desc buffer */
> > +       __kernel_size_t desc_len;         /**< Length of desc buffer */
> >         char __user *desc;        /**< User-space buffer to hold desc */
> >  };
> >
> > @@ -143,7 +143,7 @@ struct drm_version {
> >   * \sa drmGetBusid() and drmSetBusId().
> >   */
> >  struct drm_unique {
> > -       size_t unique_len;        /**< Length of unique */
> > +       __kernel_size_t unique_len;       /**< Length of unique */
> As the file is used by other platforms than Linux this change will
> break them. Can you add a typedef similar to how __u8 and friends are
> handled at the top of the file.

Yes, I added typedef size_t   __kernel_size_t; for other platforms.

-Mikko
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