linux-kernel - RE: [PATCH 09/25] Staging: hv: util: Perform some service specific de-initialization in util

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Date:	Sat, 10 Sep 2011 14:31:15 +0000
From:	KY Srinivasan <kys@...rosoft.com>
To:	Greg KH <greg@...ah.com>
CC:	"gregkh@...e.de" <gregkh@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"virtualization@...ts.osdl.org" <virtualization@...ts.osdl.org>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: RE: [PATCH 09/25] Staging: hv: util: Perform some service specific
 de-initialization in util_remove()



> -----Original Message-----
> From: Greg KH [mailto:greg@...ah.com]
> Sent: Friday, September 09, 2011 4:43 PM
> To: KY Srinivasan
> Cc: gregkh@...e.de; linux-kernel@...r.kernel.org;
> devel@...uxdriverproject.org; virtualization@...ts.osdl.org; Haiyang Zhang
> Subject: Re: [PATCH 09/25] Staging: hv: util: Perform some service specific de-
> initialization in util_remove()
> 
> On Thu, Sep 08, 2011 at 07:24:20AM -0700, K. Y. Srinivasan wrote:
> > In preparation for modifying the util driver to fully conform to the
> > Linux Driver Model, perform some service specific de-initialization in
> > util_remove() as opposed to in exit_hyperv_utils() as is currently done.
> >
> >
> > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > ---
> >  drivers/staging/hv/hv_util.c |   29 ++++++++++++++++++++++++-----
> >  1 files changed, 24 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/staging/hv/hv_util.c b/drivers/staging/hv/hv_util.c
> > index b86128a..2475ab2 100644
> > --- a/drivers/staging/hv/hv_util.c
> > +++ b/drivers/staging/hv/hv_util.c
> > @@ -291,6 +291,30 @@ error:
> >  static int util_remove(struct hv_device *dev,
> >  			const struct hv_vmbus_device_id *dev_id)
> >  {
> > +	int service = dev_id->driver_data;
> > +
> > +	switch (service) {
> > +	case HV_SHUTDOWN:
> > +		kfree(shut_txf_buf);
> > +		break;
> 
> This switch and "static" pointers you need to free aren't needed at all
> if you do this code logic correctly (i.e. a per-device buffer.)
> 
> {sigh}
> 
> I'm stopping reviewing now, this is making me grumpy, someone owes me a
> bunch of beer...

Greg,

I will rework this to be more on the lines of what you had suggested; and yes,
I remember my original promise! I want to re-spin these patches and send it to 
you as soon as possible. Which tree can I clone to get your latest check-ins; kernel.org
still seems to have issues this morning. Have you checked in Olaf's patches.

Thanks,

K. Y

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