linux-kernel - Re: [PATCH 12/59] Staging: hv: vmbus: Cleanup vmbus

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Message-ID: <20110825211514.GD26773@kroah.com>
Date:	Thu, 25 Aug 2011 14:15:14 -0700
From:	Greg KH <greg@...ah.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	devel@...uxdriverproject.org,
	Haiyang Zhang <haiyangz@...rosoft.com>, gregkh@...e.de,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org
Subject: Re: [PATCH 12/59] Staging: hv: vmbus: Cleanup vmbus_uevent() code

On Thu, Aug 25, 2011 at 01:59:30PM -0700, Greg KH wrote:
> On Thu, Aug 25, 2011 at 09:48:38AM -0700, K. Y. Srinivasan wrote:
> > Now generate appropriate uevent based on the modalias string. As part of this,
> > cleanup the existing uevent code.
> > 
> > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > ---
> >  drivers/staging/hv/vmbus_drv.c |   60 ++++++++--------------------------------
> >  1 files changed, 12 insertions(+), 48 deletions(-)
> > 
> > diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
> > index b651968..a6e7dc5 100644
> > --- a/drivers/staging/hv/vmbus_drv.c
> > +++ b/drivers/staging/hv/vmbus_drv.c
> > @@ -237,58 +237,22 @@ static struct device_attribute vmbus_device_attrs[] = {
> >   * This routine is invoked when a device is added or removed on the vmbus to
> >   * generate a uevent to udev in the userspace. The udev will then look at its
> >   * rule and the uevent generated here to load the appropriate driver
> > + *
> > + * The alias string will be of the form vmbus:guid where guid is the string
> > + * representation of the device guid (each byte of the guid will be
> > + * represented with two hex characters.
> >   */
> >  static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env)
> >  {
> >  	struct hv_device *dev = device_to_hv_device(device);
> > -	int ret;
> > -
> > -	ret = add_uevent_var(env, "VMBUS_DEVICE_CLASS_GUID={"
> > -			     "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
> > -			     "%02x%02x%02x%02x%02x%02x%02x%02x}",
> > -			     dev->dev_type.b[3],
> > -			     dev->dev_type.b[2],
> > -			     dev->dev_type.b[1],
> > -			     dev->dev_type.b[0],
> > -			     dev->dev_type.b[5],
> > -			     dev->dev_type.b[4],
> > -			     dev->dev_type.b[7],
> > -			     dev->dev_type.b[6],
> > -			     dev->dev_type.b[8],
> > -			     dev->dev_type.b[9],
> > -			     dev->dev_type.b[10],
> > -			     dev->dev_type.b[11],
> > -			     dev->dev_type.b[12],
> > -			     dev->dev_type.b[13],
> > -			     dev->dev_type.b[14],
> > -			     dev->dev_type.b[15]);
> > -
> > -	if (ret)
> > -		return ret;
> > +	int i, ret;
> > +	char alias_name[((sizeof(struct hv_vmbus_device_id) + 1)) * 2];
> >  
> > -	ret = add_uevent_var(env, "VMBUS_DEVICE_DEVICE_GUID={"
> > -			     "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
> > -			     "%02x%02x%02x%02x%02x%02x%02x%02x}",
> > -			     dev->dev_instance.b[3],
> > -			     dev->dev_instance.b[2],
> > -			     dev->dev_instance.b[1],
> > -			     dev->dev_instance.b[0],
> > -			     dev->dev_instance.b[5],
> > -			     dev->dev_instance.b[4],
> > -			     dev->dev_instance.b[7],
> > -			     dev->dev_instance.b[6],
> > -			     dev->dev_instance.b[8],
> > -			     dev->dev_instance.b[9],
> > -			     dev->dev_instance.b[10],
> > -			     dev->dev_instance.b[11],
> > -			     dev->dev_instance.b[12],
> > -			     dev->dev_instance.b[13],
> > -			     dev->dev_instance.b[14],
> > -			     dev->dev_instance.b[15]);
> > -	if (ret)
> > -		return ret;
> > +	for (i = 0; i < (sizeof(struct hv_vmbus_device_id) * 2); i += 2)
> > +		sprintf(&alias_name[i], "%02x", dev->dev_type.b[i/2]);
> 
> I have to edit this to get it to work properly with the fact that I
> added the driver_data field to hv_vmbus_device_id.

You should have a copy of the patch I applied in your inbox now, can you
verify I didn't mess it up?

thanks,

greg k-h
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