linux-kernel - Re: [PATCH v1] vmbus: Reuse uuid_le_to

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Date:   Thu, 4 May 2017 11:03:34 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        devel@...uxdriverproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] vmbus: Reuse uuid_le_to_bin() helper

On Wed, May 03, 2017 at 08:19:22PM +0300, Andy Shevchenko wrote:
> On Wed, 2017-05-03 at 20:07 +0300, Andy Shevchenko wrote:
> > Instead of open coded variant use generic helper to convert UUID
> > strings
> > to binary format.
> 
> > @@ -677,12 +644,14 @@ static ssize_t remove_id_store(struct
> > device_driver *driver, const char *buf,
> >  {
> >  	struct hv_driver *drv = drv_to_hv_drv(driver);
> >  	struct vmbus_dynid *dynid, *n;
> > 
> 
> > -	size_t retval = -ENODEV;
> > 
> > +	ssize_t retval;
> 
> Just noticed, I'm fixing a bug here as well.

It doesn't affect runtime.  You can store negatives in unsigned types so
long as they're uint or larger.

regards,
dan carpenter