Satyam Sharma <satyam <at> infradead.org> writes: > On Mon, 30 Jul 2007, Rodolfo Giometti wrote: > > > On Mon, Jul 30, 2007 at 10:33:35AM +0530, Satyam Sharma wrote: > > Currently the RFC says to you that you should open the serial port: > > > > fd = open("/dev/ttyS0", ...); > > No, it does *NOT*. All it says is: > > The time_pps_create() is used to convert an already-open UNIX file > descriptor, for an appropriate special file, into a PPS handle. > > See? What I said is precisely the implementation the RFC envisages > (and the only sane way to implement it too).
If we were totally rigurous about representing each device as a device node, your solution would be fine. But we don't. The clocksource model (/sys/devices/system/clocksource) is a better way to go. One sysfs file is used to enumerate the possible sources and another is used to read or set the current source. No new system calls; no new ioctls. -ch ch (at) murgatroid (dot) com ch (at) hpl (dot) hp (dot) com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/