linux-kernel - Re: [PATCH 01/15] Drivers: hv: Format GUIDS as per MSFT standards

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Date:	Tue, 17 Jul 2012 09:32:48 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Joe Perches <joe@...ches.com>
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	virtualization@...ts.linux-foundation.org, olaf@...fle.de,
	apw@...onical.com
Subject: Re: [PATCH 01/15] Drivers: hv: Format GUIDS as per MSFT standards

On Tue, Jul 17, 2012 at 09:19:26AM -0700, Joe Perches wrote:
> On Tue, 2012-07-17 at 09:04 -0700, Greg KH wrote:
> > On Sat, Jul 14, 2012 at 01:34:06PM -0700, K. Y. Srinivasan wrote:
> > > Format GUIDS as per MSFT standard. This makes interacting with MSFT
> > > tool stack easier.
> []
> > > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> []
> > > @@ -147,7 +147,7 @@ static ssize_t vmbus_show_device_attr(struct device *dev,
> > >  
> > >  	if (!strcmp(dev_attr->attr.name, "class_id")) {
> > >  		ret = sprintf(buf, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-"
> > > -			       "%02x%02x%02x%02x%02x%02x%02x%02x}\n",
> > > +			       "%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
> > 
> > As Joe pointed out, please just use the printk modifier the kernel
> > already has for GUIDS, and don't roll your own here.  That will work
> > properly for you, right?
> 
> %pU became available in 2.6.33
> 
> I think one of their support targets is RHEL6 which
> I believe is 2.6.32+.

That's nice, but it's nothing that I care about for in-kernel code, nor
should anyone else.

greg k-h
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