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

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Date:	Fri, 9 Sep 2011 13:42:40 -0700
From:	Greg KH <greg@...ah.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.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()

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 k-h
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