>From: devel <driverdev-devel-bounces@xxxxxxxxxxxxxxxxxxxxxx> On Behalf Of >Greg KH >On Fri, May 24, 2019 at 01:07:59PM +0200, Simon Sandström wrote: >> --- a/drivers/staging/kpc2000/kpc2000/core.c >> +++ b/drivers/staging/kpc2000/kpc2000/core.c >> @@ -276,18 +276,18 @@ static ssize_t kp2000_cdev_read(struct file *filp, > >This whole function just needs to be deleted, it's a horrible hack. >From the outside, I would definitely agree with you. On the inside though, we rely on this function to quickly identify what kind and version is running on a given piece of hardware. Since that same information is provided by an ioctl, I could be convinced to remove this API and write a userspace application that uses the ioctl to get the information and pretty prints it. I'd be more inclined to agree with the deletion if it means the whole char dev interface can be removed from the kpc2000 driver. That won't be straightforward as the ioctl is exposed through this interface. We could remove the ioctl, but we'd need to ensure that all the same information is exposed via sysfs. Our userspace side is all funneled through a single class, so changing it to use sysfs wouldn't be too difficult. I'd support that change if someone wants to make it. _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
