Hi all, While going through some code, i have found a place in which we do return, -EOPNOTSUPP in an ioctl and the code of ioctl does just this one.
static int drv_ioctl(.. *fops, ...)
{
return -EOPNOTSUPP;
}
do we actually need to specify a pointer to the ioctl callback, if the
driver doesn't support ioctl?
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