Re: [PATCH 1/2] xen/input: use string constants from PV protocol

[Oleksandr Andrushchenko <andr2000@xxxxxxxxx>]

Hello, Dmitry!
On 04/21/2017 09:42 AM, Oleksandr Andrushchenko wrote:
> On 04/21/2017 05:11 AM, Dmitry Torokhov wrote:
> > On Thu, Apr 13, 2017 at 02:38:03PM +0300, Oleksandr Andrushchenko wrote:
> > > From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> > >
> > > Xen input para-virtual protocol defines string constants
> > > used by both back and frontend. Use those instead of
> > > explicit strings in the frontend driver.
> > >
> > > Signed-off-by: Oleksandr Andrushchenko 
> > > <oleksandr_andrushchenko@xxxxxxxx>
> > I'll have to postpone it until I receive changes containing these new
> > string constants.
> fair enough
> >   Otherwise it looks OK.
> thank you
As all the dependencies are now merged into the kernel,
can we please proceed with this patch?

> > >   drivers/input/misc/xen-kbdfront.c | 22 +++++++++++++---------
> > >   1 file changed, 13 insertions(+), 9 deletions(-)
> > >
> > > diff --git a/drivers/input/misc/xen-kbdfront.c 
> > > b/drivers/input/misc/xen-kbdfront.c
> > > index 2fc7895373ab..01c27b4c3288 100644
> > > --- a/drivers/input/misc/xen-kbdfront.c
> > > +++ b/drivers/input/misc/xen-kbdfront.c
> > > @@ -135,14 +135,17 @@ static int xenkbd_probe(struct xenbus_device 
> > > *dev,
> > >           goto error_nomem;
> > >         /* Set input abs params to match backend screen res */
> > > -    abs = xenbus_read_unsigned(dev->otherend, 
> > > "feature-abs-pointer", 0);
> > > -    ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend, "width",
> > > +    abs = xenbus_read_unsigned(dev->otherend,
> > > +                   XENKBD_FIELD_FEAT_ABS_POINTER, 0);
> > > +    ptr_size[KPARAM_X] = xenbus_read_unsigned(dev->otherend,
> > > +                          XENKBD_FIELD_WIDTH,
> > >                             ptr_size[KPARAM_X]);
> > > -    ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend, "height",
> > > +    ptr_size[KPARAM_Y] = xenbus_read_unsigned(dev->otherend,
> > > +                          XENKBD_FIELD_HEIGHT,
> > >                             ptr_size[KPARAM_Y]);
> > >       if (abs) {
> > >           ret = xenbus_write(XBT_NIL, dev->nodename,
> > > -                   "request-abs-pointer", "1");
> > > +                   XENKBD_FIELD_REQ_ABS_POINTER, "1");
> > >           if (ret) {
> > >               pr_warning("xenkbd: can't request abs-pointer");
> > >               abs = 0;
> > > @@ -271,14 +274,15 @@ static int xenkbd_connect_backend(struct 
> > > xenbus_device *dev,
> > >           xenbus_dev_fatal(dev, ret, "starting transaction");
> > >           goto error_irqh;
> > >       }
> > > -    ret = xenbus_printf(xbt, dev->nodename, "page-ref", "%lu",
> > > +    ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_REF, 
> > > "%lu",
> > >                   virt_to_gfn(info->page));
> > >       if (ret)
> > >           goto error_xenbus;
> > > -    ret = xenbus_printf(xbt, dev->nodename, "page-gref", "%u", 
> > > info->gref);
> > > +    ret = xenbus_printf(xbt, dev->nodename, XENKBD_FIELD_RING_GREF,
> > > +                "%u", info->gref);
> > >       if (ret)
> > >           goto error_xenbus;
> > > -    ret = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",
> > > +    ret = xenbus_printf(xbt, dev->nodename, 
> > > XENKBD_FIELD_EVT_CHANNEL, "%u",
> > >                   evtchn);
> > >       if (ret)
> > >           goto error_xenbus;
> > > @@ -353,7 +357,7 @@ static void xenkbd_backend_changed(struct 
> > > xenbus_device *dev,
> > >   }
> > >     static const struct xenbus_device_id xenkbd_ids[] = {
> > > -    { "vkbd" },
> > > +    { XENKBD_DRIVER_NAME },
> > >       { "" }
> > >   };
> > >   @@ -390,4 +394,4 @@ module_exit(xenkbd_cleanup);
> > >     MODULE_DESCRIPTION("Xen virtual keyboard/pointer device frontend");
> > >   MODULE_LICENSE("GPL");
> > > -MODULE_ALIAS("xen:vkbd");
> > > +MODULE_ALIAS("xen:" XENKBD_DRIVER_NAME);
> > > --
> > > 2.7.4
> Thank you,
> Oleksandr
Thank you,
Oleksandr
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