linux-kernel - RE: [PATCH 1/1] Drivers: hid: hid-hyperv: Implement a stub raw

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Date:	Sat, 29 Mar 2014 05:05:53 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Jiri Kosina <jkosina@...e.cz>
CC:	"gregkh@...e.de" <gregkh@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"ohering@...e.com" <ohering@...e.com>,
	"benjamin.tissoires@...hat.com" <benjamin.tissoires@...hat.com>,
	"dh.herrmann@...il.com" <dh.herrmann@...il.com>
Subject: RE: [PATCH 1/1] Drivers: hid: hid-hyperv: Implement a stub
  raw_request() entry point


> -----Original Message-----
> From: Jiri Kosina [mailto:jkosina@...e.cz]
> Sent: Friday, March 28, 2014 6:43 PM
> To: KY Srinivasan
> Cc: gregkh@...e.de; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; ohering@...e.com;
> benjamin.tissoires@...hat.com; dh.herrmann@...il.com
> Subject: Re: [PATCH 1/1] Drivers: hid: hid-hyperv: Implement a stub
> raw_request() entry point
> 
> On Fri, 28 Mar 2014, K. Y. Srinivasan wrote:
> 
> > commit 3c86726cfe38952f0366f86acfbbb025813ec1c2
> > Author: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> > Date:   Thu Feb 20 15:24:49 2014 -0500
> >
> >     HID: make .raw_request mandatory
> >
> >     SET_REPORT and GET_REPORT are mandatory in the HID specification.
> >     Make the corresponding API in hid-core mandatory too, which removes
> the
> >     need to test against it in some various places.
> >
> >     Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> >     Reviewed-by: David Herrmann <dh.herrmann@...il.com>
> >     Signed-off-by: Jiri Kosina <jkosina@...e.cz>
> >
> > Made .raw_request mandatory and broke the Hyper-V mouse driver. This
> > patch fixes the problem.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > ---
> >  drivers/hid/hid-hyperv.c |   10 ++++++++++
> >  1 files changed, 10 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c index
> > c24908f..89a9234 100644
> > --- a/drivers/hid/hid-hyperv.c
> > +++ b/drivers/hid/hid-hyperv.c
> > @@ -460,12 +460,22 @@ static void mousevsc_hid_stop(struct hid_device
> > *hid)  {  }
> >
> > +static int mousevsc_hid_raw_request(struct hid_device *hid,
> > +				    unsigned char report_num,
> > +				    __u8 buf, size_t len,
> 
> This should be __u8 *buf. I have fixed that and applied.

Thanks Jiri,

K. Y
> 
> --
> Jiri Kosina
> SUSE Labs
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