On Mon, 11 Nov 2019 01:49:20 -0800 "Greg KH" <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > + ret = sysfs_create_bin_file(&channel->kobj, > &ring_buffer_bin_attr); > > + if (ret) > > + dev_notice(&dev->device, > > + "sysfs create ring bin file failed; %d\n", > ret); > > + > > Again, don't create sysfs files on your own, the bus code should be > doing this for you automatically and in a way that is race-free. > > thanks, > > greg k-h The sysfs file is only created if the VFIO/UIO driveris used.
