On Monday, January 26, 2015 3:29 AM, Ian Abbott wrote: > On 23/01/15 23:12, H Hartley Sweeten wrote: >> The analog input (*do_cmdtest) in this driver currently validates that the >> scan_begin_src is TRIG_FOLLOW or, if the board can_burst, TRIG_TIMER or >> TRIG_EXT. >> The rest of the driver is coded to assume that the scan_begin_src is always >> TRIG_FOLLOW. > > I don't think that's correct. If the device allows bursting, > das16_cmd_ext() (*do_cmd()) has code to handle convert_src == TRIG_NOW, > which due to the validations in das16_cmd_test() (*do_cmdtest()) (step > 2b) implies that scan_begin_src != TRIG_FOLLOW.
Ah.. I overlooked that. Step 2b isn't very clear. Step 4 doesn't help clarify it, especially since the divisors are calculated again in the (*do_cmd). It's also not nice that the (*do_cmd) possibly modifies cmd->convert_arg. I'll take another look at it... Regards, Hartley _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
