On Tue, Mar 08, 2016 at 10:37:34AM -0500, Sinan Kaya wrote: > On 3/8/2016 10:33 AM, Sinan Kaya wrote: > > + int rc = 0; > > + > > I should have initialized this to -1. > -1 is a magic number which stands for -EPERM which is wrong. Use -ENODEV. regards, dan carpenter